كتاب (نماذج أسئلة الإمتحان التنافسي/ إعداد علي إبراهيم الموسوي)
الجزء الثالث والستون:
ماجستير إرشاد تربوي قسم الإرشاد النفسي والتوجيه التربوي كلية التربية للعلوم الإنسانية جامعة البصرة ... ماجستير تأريخ حديث ومعاصر كلية التربية جامعة المثنى ... دكتوراه إنتاج ومعادن/ هندسة الإنتاج قسم الإنتاج والمعادن الجامعة التكنولوجية ... دكتوراه إنتاج ومعادن/ هندسة المعادن قسم الإنتاج والمعادن الجامعة التكنولوجية ... دكتوراه إنتاج ومعادن/ هندسة صناعية قسم الإنتاج والمعادن الجامعة التكنولوجية ... ماجستير إنتاج ومعادن/ هندسة الإنتاج قسم الإنتاج والمعادن الجامعة التكنولوجية ... ماجستير إنتاج ومعادن/ هندسة المعادن قسم الإنتاج والمعادن الجامعة التكنولوجية ... ماجستير إنتاج ومعادن/ هندسة إستخلاص المعادن قسم الإنتاج والمعادن الجامعة التكنولوجية ... ماجستير هندسة إنتاج، معادن، مواد هندسية ... ماجستير طرائق تدريس العلوم كلية التربية الأساسية الجامعة المستنصرية.
The document contains questions and explanations about corrosion and rusting of metals. It discusses the conditions required for rusting of iron, the meaning of corrosion, and half reactions involved. It explains why iron rusts faster near the sea and why gold does not corrode easily compared to magnesium. The document also describes the electrochemical series and processes involved in rusting like oxidation, reduction, and formation of a voltaic cell. Different methods to control rusting like using protective coatings, sacrificial protection, and alloying are also discussed.
Revision form 4_topic_-_manufactured_substances_in_industryFaDhirul Yusuf
This chemistry worksheet discusses manufactured substances in industry. It provides information on the manufacturing processes of sulphuric acid, ammonia, steel, and other substances. Students are asked questions to test their understanding of industrial chemistry concepts like chemical reactions, catalysts, and the properties and uses of manufactured materials. Diagrams of industrial processes and molecular structures are included to help explain key ideas.
This document appears to be an exam paper for chemistry. It consists of multiple choice and short answer questions testing knowledge of chemistry concepts including the periodic table, chemical reactions, states of matter, and experimental procedures. The questions cover topics such as identifying elements on the periodic table, writing balanced chemical equations, describing phase changes and molecular motion, naming compounds, and explaining laboratory techniques.
This document consists of a chemistry exam paper with multiple choice and short answer questions testing knowledge of chemistry concepts and principles. It includes questions on the periodic table, chemical reactions, states of matter, chemical bonding, and properties and reactions of various elements and compounds. The paper provides context for summarizing key chemistry ideas assessed on the exam.
This document presents research on the effects of acid and saline mine water on soil mineral surfaces and mineralogy. Chapter 1 provides background on acid mine drainage and the study sites. Chapter 2 analyzes metal balances in soils exposed to mine water. Chapter 3 uses X-ray diffraction to analyze changes in soil mineralogy, finding increased gypsum and hematite. Chapter 4 examines soil surface morphology under microscopy, observing rod-like structures and white particles in mine water treated soils. The research characterized changes caused by mine water exposure.
This document is the dissertation of José Geraldo Araújo Silva submitted to the Graduate Program in Civil Engineering at the Federal University of Ouro Preto in Brazil in 2001. The dissertation evaluates the behavioral characteristics of welded joints of a structural steel type SAC 50 under fatigue loading. It utilizes traditional mechanical tests as well as fracture mechanics methods, including toughness tests, fatigue crack propagation tests, and analyses of fracture surfaces. The results show that the three regions of the welded material (fusion zone, heat-affected zone, and base metal) have similar toughness. The fusion zone exhibited higher resistance to crack propagation compared to the other regions. For fatigue crack propagation tests, the base metal had a lower threshold value indicating
This document discusses data preprocessing techniques for data mining. It explains that real-world data is often dirty, containing issues like missing values, noise, and inconsistencies. Major tasks in data preprocessing include data cleaning, integration, transformation, reduction, and discretization. Data cleaning techniques are especially important and involve filling in missing values, identifying and handling outliers, resolving inconsistencies, and reducing redundancy from data integration. Other techniques discussed include binning data for smoothing noisy values and handling missing data through various imputation methods.
Anthony Troger completed an internship at the National Institute for Interdisciplinary Science and Technology (NIIST) in India in 2016. He studied electro-conductive cermet concrete made from iron oxide industrial sludge as a potential new earthing material. The internship was supervised by Dr. S. Ananthakumar and M. G. Narayanan during Anthony's studies in Engineering Physics at Clermont-Ferrand in France from 2013-2017. His project involved characterizing iron oxide sludge from a titanium production process, mixing it with cement and carbonizing agents, and testing the electrical conductivity of the resulting composites.
The document contains questions and explanations about corrosion and rusting of metals. It discusses the conditions required for rusting of iron, the meaning of corrosion, and half reactions involved. It explains why iron rusts faster near the sea and why gold does not corrode easily compared to magnesium. The document also describes the electrochemical series and processes involved in rusting like oxidation, reduction, and formation of a voltaic cell. Different methods to control rusting like using protective coatings, sacrificial protection, and alloying are also discussed.
Revision form 4_topic_-_manufactured_substances_in_industryFaDhirul Yusuf
This chemistry worksheet discusses manufactured substances in industry. It provides information on the manufacturing processes of sulphuric acid, ammonia, steel, and other substances. Students are asked questions to test their understanding of industrial chemistry concepts like chemical reactions, catalysts, and the properties and uses of manufactured materials. Diagrams of industrial processes and molecular structures are included to help explain key ideas.
This document appears to be an exam paper for chemistry. It consists of multiple choice and short answer questions testing knowledge of chemistry concepts including the periodic table, chemical reactions, states of matter, and experimental procedures. The questions cover topics such as identifying elements on the periodic table, writing balanced chemical equations, describing phase changes and molecular motion, naming compounds, and explaining laboratory techniques.
This document consists of a chemistry exam paper with multiple choice and short answer questions testing knowledge of chemistry concepts and principles. It includes questions on the periodic table, chemical reactions, states of matter, chemical bonding, and properties and reactions of various elements and compounds. The paper provides context for summarizing key chemistry ideas assessed on the exam.
This document presents research on the effects of acid and saline mine water on soil mineral surfaces and mineralogy. Chapter 1 provides background on acid mine drainage and the study sites. Chapter 2 analyzes metal balances in soils exposed to mine water. Chapter 3 uses X-ray diffraction to analyze changes in soil mineralogy, finding increased gypsum and hematite. Chapter 4 examines soil surface morphology under microscopy, observing rod-like structures and white particles in mine water treated soils. The research characterized changes caused by mine water exposure.
This document is the dissertation of José Geraldo Araújo Silva submitted to the Graduate Program in Civil Engineering at the Federal University of Ouro Preto in Brazil in 2001. The dissertation evaluates the behavioral characteristics of welded joints of a structural steel type SAC 50 under fatigue loading. It utilizes traditional mechanical tests as well as fracture mechanics methods, including toughness tests, fatigue crack propagation tests, and analyses of fracture surfaces. The results show that the three regions of the welded material (fusion zone, heat-affected zone, and base metal) have similar toughness. The fusion zone exhibited higher resistance to crack propagation compared to the other regions. For fatigue crack propagation tests, the base metal had a lower threshold value indicating
This document discusses data preprocessing techniques for data mining. It explains that real-world data is often dirty, containing issues like missing values, noise, and inconsistencies. Major tasks in data preprocessing include data cleaning, integration, transformation, reduction, and discretization. Data cleaning techniques are especially important and involve filling in missing values, identifying and handling outliers, resolving inconsistencies, and reducing redundancy from data integration. Other techniques discussed include binning data for smoothing noisy values and handling missing data through various imputation methods.
Anthony Troger completed an internship at the National Institute for Interdisciplinary Science and Technology (NIIST) in India in 2016. He studied electro-conductive cermet concrete made from iron oxide industrial sludge as a potential new earthing material. The internship was supervised by Dr. S. Ananthakumar and M. G. Narayanan during Anthony's studies in Engineering Physics at Clermont-Ferrand in France from 2013-2017. His project involved characterizing iron oxide sludge from a titanium production process, mixing it with cement and carbonizing agents, and testing the electrical conductivity of the resulting composites.
The document is a chemistry exam paper containing multiple questions on topics related to electricity and chemistry. It includes questions about the extraction of zinc from zinc blende, the purification of zinc by electrolysis, corrosion of steel and its prevention, the extraction of iron in the blast furnace, and catalysts in chemical reactions. The questions require students to write word and ionic equations, explain observations, complete descriptions, and suggest explanations.
1) Aluminum alloy 6061 chips were recycled through solid-state recycling involving hot extrusion followed by equal channel angular pressing (ECAP) without remelting.
2) The extruded rods were ECAP processed at room temperature up to different numbers of passes.
3) The microstructure and mechanical properties were investigated for variations in extrusion temperature and number of ECAP passes. Grain refinement and higher strength properties were observed with increasing ECAP passes.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
This document summarizes a study on the partially melted zone (PMZ) in A356 Al-Si alloy welds produced using different welding techniques and with the alloy in different prior conditions. Key findings include:
1) Liquation was more severe in the PMZ of welds made with the alloy in the T6 condition compared to the as-cast condition, due to higher concentrations of silicon and magnesium at grain boundaries in the T6 condition.
2) Pulsed current gas tungsten arc welding resulted in less liquation in the PMZ compared to continuous current gas tungsten arc welding.
3) Microstructural examination and hardness testing showed coarser grains and more liquation products
Effect of Modified AA5356 Filler on Corrosion Behavior of AA6061 Alloy GTA WeldsIJMER
1) The document examines the effect of modified AA5356 filler and grain refiners on the corrosion behavior of AA6061 alloy gas tungsten arc welds.
2) Dynamic polarization testing showed that welds made with 0.5% scandium-modified AA5356 filler using pulsed current welding had the highest pitting corrosion resistance.
3) Optical microscopy revealed that additions of grain refiners like scandium, zirconium, and tibor to the AA5356 filler reduced pit size and density in the fusion zone, improving corrosion resistance compared to unmodified AA5356 filler.
Mechanical engineering competitive exam previous year question paperdeepa sahu
This document contains 31 multiple choice questions related to mechanical engineering topics such as manufacturing processes, materials, thermodynamics, and mechanics. The questions cover gauges, gas turbines, casting processes, heat engines, hydraulics, welding, combustion, gear trains and more. Correct answers are provided for each question.
This document contains multiple choice and short answer questions about joining processes like welding. It asks about concepts like heat transfer factor, melting factor, weldability, and different welding processes. It also provides calculations to determine unit energy for melting metals and travel speed for a continuous fillet weld. Key terms and processes covered include fusion welding, solid state welding, autogenous welding, arc welding, resistance welding, oxyfuel welding, brazing, and soldering.
The document contains 40 multiple choice questions related to engineering topics like mechanics, materials science, thermodynamics, manufacturing processes etc. Each question has 4 answer options out of which only one is correct. The questions test fundamental concepts and definitions from various engineering domains.
The document contains 72 multiple choice questions related to civil engineering. The questions cover topics such as construction project management (CPM), sewage treatment, water supply, structural engineering, soil mechanics, transportation engineering, surveying, and construction materials. Most of the questions have 4 answer options with only one correct answer.
This document appears to be an exam for the subject of chemistry, consisting of multiple choice and short answer questions covering various topics in chemistry including the periodic table, chemical reactions, states of matter, and properties of metals. The exam provides a periodic table, questions to be answered on the exam paper provided, and is 16 pages in length.
This document appears to be an exam paper for chemistry. It consists of multiple choice and short answer questions testing knowledge of chemistry concepts including the periodic table, chemical reactions, states of matter, and experimental procedures. The questions cover topics such as identifying elements on the periodic table, writing balanced chemical equations, describing phase changes and molecular motion, naming compounds, and explaining laboratory techniques.
This study examined the effects of centrifugal barrel tumbling on surface finish, edge radius, and dimensions of precision miniature parts. Testing involved 5800 measurements of test specimens and production parts. Burrs as small as 0.001 inch thick by 0.001 inch high were removed in 2-5 minutes under normal conditions, while thicker or taller burrs took longer. It is possible to remove burrs as small as 0.001 inch or less while only removing 0.0001 inch from external surfaces. For smaller burrs, complete removal can occur with stock losses of 0.000050 inch or less, with a repeatability of 0.000006 inch.
Karnataka PGCET Mechanical - Part A 2018 syllabusEneutron
This document provides an overview of topics covered in mechanical science. It includes:
1. Engineering mathematics concepts like linear algebra, calculus, differential equations, and statistics.
2. Properties and applications of engineering materials like composites.
3. Engineering mechanics principles like equilibrium, centroids, and moments of inertia.
4. Strength of materials theories for stress, strain, failure, beams, columns, and joints.
5. Fluid mechanics concepts like properties, statics, dynamics, and flows.
6. Thermodynamics laws and applications to cycles, engines, and turbines.
7. Machine elements like mechanisms, vibrations, gears, and bearings.
8. Design considerations for shafts
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
Experimental Study of Wear Rate Coefficient of Aluminium Hybrid Composites Ma...AM Publications
In current decade, demand in material characteristics like light weight, superior strength to weight ratio, improved surface properties and enhanced wear resistance for complex engineering applications like automobile, aerospace and nuclear are researcher’s interest. However, performance of hybrid composites depends on right combination of reinforcements. Silicon carbide, silicon nitride, boron nitride and titanium carbide are few reinforcements available at present. In this work, Al356 is reinforced with SiC and B4C to enhance the mechanical properties, surface hardness and wear resistance. This hybrid composite is prepared by stir casting technique and the morphology of composite is studied using optical microscope to investigate the dispersion of reinforcements. In the present study, the wear and friction characteristics of hybrid composites are investigated using pin on disc dry wear tests by varying the load and speed and the results are tabulated for load vs mass loss, load vs wear rate and load vs wear coefficient. The results report that wear rate of hybrid composites are lower than that of binary composites. Mechanical properties, surface hardness and wear characteristics of aluminium hybrid composites are compared with that of aluminium binary composites available at present.
This document provides guidance on permissible stress levels for various types of welds, including complete and partial penetration groove welds, fillet welds, and plug and slot welds. It specifies the permissible stress levels for welds under different loading conditions such as tension, compression, shear, and fatigue. It also provides a table matching weld metal strength levels to common base metal grades. The document is intended to help engineers properly design welded connections and determine required weld sizes.
Study of the Tribological behavior of as cast Al-4.2%Cu-Al2O3 compositeIOSR Journals
The research work is carried out on the study of tribological property of aluminium based metal matrix composite material, which is fabricated by using sol-gel technique. The composite material is prepared through liquid metallurgy method by using varying percentage of Alumina and aluminium and fixed percentage of copper 4.2%. Test sample billet is fabricated through casting method and has been examined the different mechanical behaviour such as Vickers Hardness Number, Ultimate Tensile Strength, 0.2% Proof Stress, etc.
From the study, it has been observed that with increase in the alumina content in matrix the ductility of composite show a contrary effect. The Pin-On-Disc test is used to evaluate the tribological property wear for composite material and it is observered that tendency of wear rate has improved. The weight losses of the specimen are measured and wear and friction characteristics are calculated with respect to time. Depth of wear track, sliding speed, bearing load friction coefficient and wear volume have been shown large sensitivity to the applied normal load and the testing time (or sliding distance). The XRD and SEM analysis are used to analyse the wear debris and track; and silent conclusion has been drawn
1-1 Influence of Multi Extrusion Die Process on Mechanical and Chemical Behav...Ahmed Ibrahim Razooqi
INFLUENCE OF MULTI EXTRUSION DIE PROCESS ON MECHANICAL
AND CHEMICAL BEHAVIOR OF 2024-T3 ALLOY.
Ahmed Ibrahim RAZOOQI
Technical Engineering College - Baghdad, Middle Technical University, Baghdad, IRAQ
This document contains 25 multiple choice questions from a BGas painting inspection test. It covers topics like corrosion, surface preparation standards, electrolytes, blast media, and factors that influence corrosion rates. The questions are followed by their corresponding answers. The purpose of the document is to test knowledge of painting inspection and surface preparation requirements for BGas projects.
Indicators of Iraqi Journals Indexed in Global rankings مؤشرات المجلات العرا...Ali I. Al-Mosawi
يضم هذا التقرير كل المجلات العراقية الداخلة في التصنيفات العالمية مثل سكوباس، كلاريفيت، وسيماكو ومؤشراتها العلمية بعد التحديثات الفصلية خلال العام 2024.
http://dx.doi.org/10.13140/RG.2.2.33499.99361
The document is a chemistry exam paper containing multiple questions on topics related to electricity and chemistry. It includes questions about the extraction of zinc from zinc blende, the purification of zinc by electrolysis, corrosion of steel and its prevention, the extraction of iron in the blast furnace, and catalysts in chemical reactions. The questions require students to write word and ionic equations, explain observations, complete descriptions, and suggest explanations.
1) Aluminum alloy 6061 chips were recycled through solid-state recycling involving hot extrusion followed by equal channel angular pressing (ECAP) without remelting.
2) The extruded rods were ECAP processed at room temperature up to different numbers of passes.
3) The microstructure and mechanical properties were investigated for variations in extrusion temperature and number of ECAP passes. Grain refinement and higher strength properties were observed with increasing ECAP passes.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
This document summarizes a study on the partially melted zone (PMZ) in A356 Al-Si alloy welds produced using different welding techniques and with the alloy in different prior conditions. Key findings include:
1) Liquation was more severe in the PMZ of welds made with the alloy in the T6 condition compared to the as-cast condition, due to higher concentrations of silicon and magnesium at grain boundaries in the T6 condition.
2) Pulsed current gas tungsten arc welding resulted in less liquation in the PMZ compared to continuous current gas tungsten arc welding.
3) Microstructural examination and hardness testing showed coarser grains and more liquation products
Effect of Modified AA5356 Filler on Corrosion Behavior of AA6061 Alloy GTA WeldsIJMER
1) The document examines the effect of modified AA5356 filler and grain refiners on the corrosion behavior of AA6061 alloy gas tungsten arc welds.
2) Dynamic polarization testing showed that welds made with 0.5% scandium-modified AA5356 filler using pulsed current welding had the highest pitting corrosion resistance.
3) Optical microscopy revealed that additions of grain refiners like scandium, zirconium, and tibor to the AA5356 filler reduced pit size and density in the fusion zone, improving corrosion resistance compared to unmodified AA5356 filler.
Mechanical engineering competitive exam previous year question paperdeepa sahu
This document contains 31 multiple choice questions related to mechanical engineering topics such as manufacturing processes, materials, thermodynamics, and mechanics. The questions cover gauges, gas turbines, casting processes, heat engines, hydraulics, welding, combustion, gear trains and more. Correct answers are provided for each question.
This document contains multiple choice and short answer questions about joining processes like welding. It asks about concepts like heat transfer factor, melting factor, weldability, and different welding processes. It also provides calculations to determine unit energy for melting metals and travel speed for a continuous fillet weld. Key terms and processes covered include fusion welding, solid state welding, autogenous welding, arc welding, resistance welding, oxyfuel welding, brazing, and soldering.
The document contains 40 multiple choice questions related to engineering topics like mechanics, materials science, thermodynamics, manufacturing processes etc. Each question has 4 answer options out of which only one is correct. The questions test fundamental concepts and definitions from various engineering domains.
The document contains 72 multiple choice questions related to civil engineering. The questions cover topics such as construction project management (CPM), sewage treatment, water supply, structural engineering, soil mechanics, transportation engineering, surveying, and construction materials. Most of the questions have 4 answer options with only one correct answer.
This document appears to be an exam for the subject of chemistry, consisting of multiple choice and short answer questions covering various topics in chemistry including the periodic table, chemical reactions, states of matter, and properties of metals. The exam provides a periodic table, questions to be answered on the exam paper provided, and is 16 pages in length.
This document appears to be an exam paper for chemistry. It consists of multiple choice and short answer questions testing knowledge of chemistry concepts including the periodic table, chemical reactions, states of matter, and experimental procedures. The questions cover topics such as identifying elements on the periodic table, writing balanced chemical equations, describing phase changes and molecular motion, naming compounds, and explaining laboratory techniques.
This study examined the effects of centrifugal barrel tumbling on surface finish, edge radius, and dimensions of precision miniature parts. Testing involved 5800 measurements of test specimens and production parts. Burrs as small as 0.001 inch thick by 0.001 inch high were removed in 2-5 minutes under normal conditions, while thicker or taller burrs took longer. It is possible to remove burrs as small as 0.001 inch or less while only removing 0.0001 inch from external surfaces. For smaller burrs, complete removal can occur with stock losses of 0.000050 inch or less, with a repeatability of 0.000006 inch.
Karnataka PGCET Mechanical - Part A 2018 syllabusEneutron
This document provides an overview of topics covered in mechanical science. It includes:
1. Engineering mathematics concepts like linear algebra, calculus, differential equations, and statistics.
2. Properties and applications of engineering materials like composites.
3. Engineering mechanics principles like equilibrium, centroids, and moments of inertia.
4. Strength of materials theories for stress, strain, failure, beams, columns, and joints.
5. Fluid mechanics concepts like properties, statics, dynamics, and flows.
6. Thermodynamics laws and applications to cycles, engines, and turbines.
7. Machine elements like mechanisms, vibrations, gears, and bearings.
8. Design considerations for shafts
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
Experimental Study of Wear Rate Coefficient of Aluminium Hybrid Composites Ma...AM Publications
In current decade, demand in material characteristics like light weight, superior strength to weight ratio, improved surface properties and enhanced wear resistance for complex engineering applications like automobile, aerospace and nuclear are researcher’s interest. However, performance of hybrid composites depends on right combination of reinforcements. Silicon carbide, silicon nitride, boron nitride and titanium carbide are few reinforcements available at present. In this work, Al356 is reinforced with SiC and B4C to enhance the mechanical properties, surface hardness and wear resistance. This hybrid composite is prepared by stir casting technique and the morphology of composite is studied using optical microscope to investigate the dispersion of reinforcements. In the present study, the wear and friction characteristics of hybrid composites are investigated using pin on disc dry wear tests by varying the load and speed and the results are tabulated for load vs mass loss, load vs wear rate and load vs wear coefficient. The results report that wear rate of hybrid composites are lower than that of binary composites. Mechanical properties, surface hardness and wear characteristics of aluminium hybrid composites are compared with that of aluminium binary composites available at present.
This document provides guidance on permissible stress levels for various types of welds, including complete and partial penetration groove welds, fillet welds, and plug and slot welds. It specifies the permissible stress levels for welds under different loading conditions such as tension, compression, shear, and fatigue. It also provides a table matching weld metal strength levels to common base metal grades. The document is intended to help engineers properly design welded connections and determine required weld sizes.
Study of the Tribological behavior of as cast Al-4.2%Cu-Al2O3 compositeIOSR Journals
The research work is carried out on the study of tribological property of aluminium based metal matrix composite material, which is fabricated by using sol-gel technique. The composite material is prepared through liquid metallurgy method by using varying percentage of Alumina and aluminium and fixed percentage of copper 4.2%. Test sample billet is fabricated through casting method and has been examined the different mechanical behaviour such as Vickers Hardness Number, Ultimate Tensile Strength, 0.2% Proof Stress, etc.
From the study, it has been observed that with increase in the alumina content in matrix the ductility of composite show a contrary effect. The Pin-On-Disc test is used to evaluate the tribological property wear for composite material and it is observered that tendency of wear rate has improved. The weight losses of the specimen are measured and wear and friction characteristics are calculated with respect to time. Depth of wear track, sliding speed, bearing load friction coefficient and wear volume have been shown large sensitivity to the applied normal load and the testing time (or sliding distance). The XRD and SEM analysis are used to analyse the wear debris and track; and silent conclusion has been drawn
1-1 Influence of Multi Extrusion Die Process on Mechanical and Chemical Behav...Ahmed Ibrahim Razooqi
INFLUENCE OF MULTI EXTRUSION DIE PROCESS ON MECHANICAL
AND CHEMICAL BEHAVIOR OF 2024-T3 ALLOY.
Ahmed Ibrahim RAZOOQI
Technical Engineering College - Baghdad, Middle Technical University, Baghdad, IRAQ
This document contains 25 multiple choice questions from a BGas painting inspection test. It covers topics like corrosion, surface preparation standards, electrolytes, blast media, and factors that influence corrosion rates. The questions are followed by their corresponding answers. The purpose of the document is to test knowledge of painting inspection and surface preparation requirements for BGas projects.
Similar to Samples of Competitive Examination Questions: Part XXXXXXIII (20)
Indicators of Iraqi Journals Indexed in Global rankings مؤشرات المجلات العرا...Ali I. Al-Mosawi
يضم هذا التقرير كل المجلات العراقية الداخلة في التصنيفات العالمية مثل سكوباس، كلاريفيت، وسيماكو ومؤشراتها العلمية بعد التحديثات الفصلية خلال العام 2024.
http://dx.doi.org/10.13140/RG.2.2.33499.99361
أفضل محركات البحث عن زمالات ما بعد الدكتوراة Best Search Engines for Postdoct...Ali I. Al-Mosawi
بكلمات بسيطة مابعد الدكتوراة هي تدريب عملي لمدة سنة أو سنتين ينشر الباحث بعدها مجموعة من البحوث متعلقة بما عمله طوال فترة بحثه أو دراسته. لذلك فهي عمل أكثر مما هي دراسة وهي أيضاً ليست درجة علمية، حيث يتم تهيئة الباحث للعمل الأكاديمي أو المختبري وإكسابه الخبرة والمهارة العلميتين. وهنا تكمن صعوبة الحصول على منح أو زمالات مابعد الدكتوراة بكونها عمل. في التقرير الحالي سوف يجد من يرغب بالحصول على زمالة مابعد الدكتوراة على أهم المواقع ومحركات البحث التي تدرج الزمالات التي تطرحها الجامعات لهذا النوع من الدراسة.
أفضل مواقع المنح الدراسية Best Scholarship WebsitesAli I. Al-Mosawi
في هذا التقرير سوف يجد الراغبين بالدراسة في الخارج العديد من المواقع الموثوقة للبحث عن المنح الدراسية والتي توفرها الجامعات العالمية وبمختلف التخصصات.
http://dx.doi.org/10.13140/RG.2.2.36090.47043
لكل نظام تعليمي في بلد أو كيان معين خصوصية تميزه عن غيره، وهذه الخصوصية تأهله ليكون تجربة يحتذى بها في بلدان أخرى تطمح لتحسين نظامها التعليمي أو إستبداله بشكل تام. ومن الأمثلة على هكذا أنظمة تعليمية ناجحة هو النظام التعليمي الأوربي أو كما يُشار إليه بمسار بولونيا، والذي كان هدفه رفع جودة التعليم في بلدان الإتحاد الأوربي وجعلها تقريباً بمستوى متقارب. هذا النظام أو المسار تم إعتماده للتنفيذ في الجامعات العراقية الآن، ولتسهيل عملية فهم وإدراك هذا النظام سوف أقدم في هذا التقرير شرحاً مبسطاً لحساب الوحدات فيه.
الفرق بين الفهرسة والتلخيص Indexing vs. AbstractingAli I. Al-Mosawi
هل قرأت يوماً عند تصفحك لموقع مجلة ما عبارة (Journal indexing and abstracting) وتبادر إلى ذهنك سؤال ما هو الفرق بين الفهرسة (Indexing) والتلخيص (Abstracting)، في هذا التقرير سوف نتعرف على الفرق بينهما.
المكتبات العربية المجانية Free Arabic Libraries Ali I. Al-Mosawi
في هذا التقرير قمت بإدراج العشرات من مواقع المكتبات العربية الرقمية والتي تتيح التحميل المجاني لمحتوياتها من كتب عربية وأجنبية أيضاً، ولمختلف التخصصات العلمية والإنسانية.
This document provides an overview of wound healing, its functions, stages, mechanisms, factors affecting it, and complications.
A wound is a break in the integrity of the skin or tissues, which may be associated with disruption of the structure and function.
Healing is the body’s response to injury in an attempt to restore normal structure and functions.
Healing can occur in two ways: Regeneration and Repair
There are 4 phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This document also describes the mechanism of wound healing. Factors that affect healing include infection, uncontrolled diabetes, poor nutrition, age, anemia, the presence of foreign bodies, etc.
Complications of wound healing like infection, hyperpigmentation of scar, contractures, and keloid formation.
CapTechTalks Webinar Slides June 2024 Donovan Wright.pptxCapitolTechU
Slides from a Capitol Technology University webinar held June 20, 2024. The webinar featured Dr. Donovan Wright, presenting on the Department of Defense Digital Transformation.
How to Download & Install Module From the Odoo App Store in Odoo 17Celine George
Custom modules offer the flexibility to extend Odoo's capabilities, address unique requirements, and optimize workflows to align seamlessly with your organization's processes. By leveraging custom modules, businesses can unlock greater efficiency, productivity, and innovation, empowering them to stay competitive in today's dynamic market landscape. In this tutorial, we'll guide you step by step on how to easily download and install modules from the Odoo App Store.
Philippine Edukasyong Pantahanan at Pangkabuhayan (EPP) CurriculumMJDuyan
(𝐓𝐋𝐄 𝟏𝟎𝟎) (𝐋𝐞𝐬𝐬𝐨𝐧 𝟏)-𝐏𝐫𝐞𝐥𝐢𝐦𝐬
𝐃𝐢𝐬𝐜𝐮𝐬𝐬 𝐭𝐡𝐞 𝐄𝐏𝐏 𝐂𝐮𝐫𝐫𝐢𝐜𝐮𝐥𝐮𝐦 𝐢𝐧 𝐭𝐡𝐞 𝐏𝐡𝐢𝐥𝐢𝐩𝐩𝐢𝐧𝐞𝐬:
- Understand the goals and objectives of the Edukasyong Pantahanan at Pangkabuhayan (EPP) curriculum, recognizing its importance in fostering practical life skills and values among students. Students will also be able to identify the key components and subjects covered, such as agriculture, home economics, industrial arts, and information and communication technology.
𝐄𝐱𝐩𝐥𝐚𝐢𝐧 𝐭𝐡𝐞 𝐍𝐚𝐭𝐮𝐫𝐞 𝐚𝐧𝐝 𝐒𝐜𝐨𝐩𝐞 𝐨𝐟 𝐚𝐧 𝐄𝐧𝐭𝐫𝐞𝐩𝐫𝐞𝐧𝐞𝐮𝐫:
-Define entrepreneurship, distinguishing it from general business activities by emphasizing its focus on innovation, risk-taking, and value creation. Students will describe the characteristics and traits of successful entrepreneurs, including their roles and responsibilities, and discuss the broader economic and social impacts of entrepreneurial activities on both local and global scales.
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إضغ بين إيديكم من أقوى الملازم التي صممتها
ملزمة تشريح الجهاز الهيكلي (نظري 3)
💀💀💀💀💀💀💀💀💀💀
تتميز هذهِ الملزمة بعِدة مُميزات :
1- مُترجمة ترجمة تُناسب جميع المستويات
2- تحتوي على 78 رسم توضيحي لكل كلمة موجودة بالملزمة (لكل كلمة !!!!)
#فهم_ماكو_درخ
3- دقة الكتابة والصور عالية جداً جداً جداً
4- هُنالك بعض المعلومات تم توضيحها بشكل تفصيلي جداً (تُعتبر لدى الطالب أو الطالبة بإنها معلومات مُبهمة ومع ذلك تم توضيح هذهِ المعلومات المُبهمة بشكل تفصيلي جداً
5- الملزمة تشرح نفسها ب نفسها بس تكلك تعال اقراني
6- تحتوي الملزمة في اول سلايد على خارطة تتضمن جميع تفرُعات معلومات الجهاز الهيكلي المذكورة في هذهِ الملزمة
واخيراً هذهِ الملزمة حلالٌ عليكم وإتمنى منكم إن تدعولي بالخير والصحة والعافية فقط
كل التوفيق زملائي وزميلاتي ، زميلكم محمد الذهبي 💊💊
🔥🔥🔥🔥🔥🔥🔥🔥🔥
A Visual Guide to 1 Samuel | A Tale of Two HeartsSteve Thomason
These slides walk through the story of 1 Samuel. Samuel is the last judge of Israel. The people reject God and want a king. Saul is anointed as the first king, but he is not a good king. David, the shepherd boy is anointed and Saul is envious of him. David shows honor while Saul continues to self destruct.
A Free 200-Page eBook ~ Brain and Mind Exercise.pptxOH TEIK BIN
(A Free eBook comprising 3 Sets of Presentation of a selection of Puzzles, Brain Teasers and Thinking Problems to exercise both the mind and the Right and Left Brain. To help keep the mind and brain fit and healthy. Good for both the young and old alike.
Answers are given for all the puzzles and problems.)
With Metta,
Bro. Oh Teik Bin 🙏🤓🤔🥰
How to Manage Reception Report in Odoo 17Celine George
A business may deal with both sales and purchases occasionally. They buy things from vendors and then sell them to their customers. Such dealings can be confusing at times. Because multiple clients may inquire about the same product at the same time, after purchasing those products, customers must be assigned to them. Odoo has a tool called Reception Report that can be used to complete this assignment. By enabling this, a reception report comes automatically after confirming a receipt, from which we can assign products to orders.
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1- Eutectiod steel contains ....carbon. (a) 0.8%, (b)2o ,(c)l.6ohand (d)
6.7Yo
2- Principle is not very important in materials selection. (a) true or (b) fatse
3' ............... plays an important role in materials selection. (a) hardness, (b)
designn (c) hydrogen and (d) nitrogen
4- Low strength alloys have yield strengths approximately ............ Mpa. (a)
higher than 500, (b) higher than 700 and (c) lower than 250
5' The simple compaction process used to produce product in powder technology is
. (a) cold die compaction, (b) hot die compaction, (c) HIp and
(d) crP
6- Most important shape memory alloys are based on. (a) Niri, (b)Alsi, (c) pbsn
and (d) FeAl
7' Advanced structural metallic materials have had a considerable impact on the
development of a wide range of strategic technologies. (a) true or (b) false
8- The term nucleation is not referred to the formation of the first nanosized
crystalline from molten material. (a) true or (b) false
9- Pig iron is the molten iron produced in a ----------- furnace. (a)
induction, (b) open and (c) blast
10-The unit of dislocation is ...........
11-The most important element used for modify Al-si eutectic ailoy is ................. .
12-Al-zn-cu-Mg alloys are considered as low strength AI- alloys. (a) true or (b)
false
13-The unit of strength is .......:.. .
14-The young modulus of steel is approximately ....... Gpa .
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.
1S-Silica glass has an .......... .... structure. (a) crystallineo (b) amorphous
and (c) semicrystalline
16-Friction welding is a solid state welding. (a) true or (b) false
17-The oxide film forms on pure aluminium is (a) Al2o ri(u) zror, (c) sio2 and (d)
YzOr
1 8-The metal has melting point of 1539
oC
is . .. . .. .
19-The metal has melting point of 1083
oC
is .......
20-The packing factor of the bcc structure is ........ ... . (a) 32Yo, (b) 68%,
(c) 74Y" and (d) 12o/o
21-Magnetic particle testing technique is used to examine austentic stainless steel.
(a) true or (b) false
22-ln secondary stage of creep (d€/d| is not a constant. (a) true or (b) false
23-Creep has three zones. (a) true or (b) false
24-Thepercentage of Si in eutectic Al-Si is ........--... .(a) 5, (b) 8, (c) f2
and (d)22
25-The electrostatic nature of the ionic bond makes is ........... ..... . (a)
weak, (b) nondirectional and (c) directional
26-Borodizing of steel is taken place by the addition of ................. element.
27-Chromozing of steel is taken place by the addition of ........ element.
28- The important nitriding element with Cr in steel is ...........
29- Grain boundary sliding occurs at temperature relative to melting point (in
Kelvin) equal to ..........
30-A galvanic cell converts stored energy into electrical energy. (a) true or (b) false
31-The frequency range of ultrasonic vibration used in NDT is 10-20. (a) true or (b)
false
32-In Al-alloys, type 2XXX means
33-In Al-alloys, type 4XXX means
34-In welding technology the process GMA is for ......
35-SEM is used because of it's . (a) high depth of field, (b) high
contrast and (c) low magnification
36-W has a high melting point. (a) true or (b) false
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37-The symbols of cadmium is ........... . (a) Ca, (b) Co, (c) Cd and (d) Cu
38-The elastic resilience of a material is given by .......... .. . (a) % stress x
strain, (b) stress x strainfstress x hardness
39-The area under the stress-strain curve is described as ........
Property.
4O-Brittle materials is generally tested in ........................ test.
41-The most important five elements in medium carbon steels with carbon are
......,...... and........
42-Bainite is commonly found in ...........
43-The most important two elements found in stainless steels are .................. and
44-The lightest of the commercially important metal is ...........
45-The strong lightweight and corrosion resistance metal is ...........
46-The type of 316 stainless steel modified for welding ir ......L...
47- The polymerization process takes place in polymers either an addition or a
48-Elastomers are simply define as ...........
49-Define oxyfuel gas welding ............
50- All arcs welding are done with nonmetal electrodes. (a) True or (b) false
51-The heat for resistance welding is determined by the basic relationship namely
52-The most commonly used brazed alloys are based on ................ Element.
53-The strengthening mechanism of heat treatment of Al-alloys is
S4-Martensitic transformation in steels is ........... .............. . (a)
diffusion transformation, (b) diffusionless transformation and (c) soft
55- The commonly commercial glass is based on .......... .. . (a) alumina,
(b) magnesia, (c) zirconia and (d) silica
56-Creep of ceramics is taken place at........... .... . (a) low temperature,
(b) room temperature and (c) high temperature
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57-Two equal and opposite charges are called ......... . (a) electron, (b)
dipole, (c) proton and (d) neutron
58'The most important elements in superalroys are ......... . (a) Ni
and Co, (b) Fe and Cr, (c) Fe and Mo and (d) Fe, Ni and Cu
S9-Prolit is approximately ..............;...... from the selling price. (a) 5yo,(b)t2o ,
(c)8oh and(d)20o/"
60-The unit of specific enerry of laser beam is ........... . (a) wmm, (b)
Wmm2, (c) J/mm2 and (d) Wmm3
61-The percentage of carbon in o-iron is ...........
62- Stellite is ................. based alloys.
63-Cobalt based alloys have seen use in wear resistance related applications. (a)
true or (b) false
64-The temper designation for annealing in Al-alloys is ...........
65-H temper designation in Al-alloys means
66-The most important traditional metal added to AI precipi{4ted alloy s is
67-The most important property when cracks and flaws present in materials is
68-Fatigue cracks often initate either on the surface or at .......
Site.
69'Overall, aluminium alloy products correde in a localized manner either by
pitting, intergragnular attack or .......... corrosion .
70-Al alloys represent a very class of structure for ......... ............. . (a)
high temperature applications, (b) subzero applications and (c) wear resistance.
71 -Blending and .. .. . are the processes used to obtain uniform
distribution of particles in powder technology.
72'Ionic formula shows the charges of the ions in an ionic substance. (a) true and
(b) fatse
73-The important inclusion in Al-alloy casting is ........... ..... . (a)ZnO,
(b) Al2O3, (Na2O3) and (d) CaO
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74-The periodic table is proposed by .......... ..... . (a) Scott, (b) Arnold,
(c) Mendeleyev and (d) West
75- Platinium is a transition element and ........ . (a) soft, (b) hard,
(c) red color and (d) low melting temperature '
76-C2H4 is ........... . (a) methane, (b) ethane, (c) propytene and (d)
acetylene
77-PYC is polyvinylchloride. (a) true or (b) fatse
78-One nanometer is equal to .......................... m.
79-The number of atoms in BCC is ...........
80-vacancies are . (a) line defects, (b) volume defects and (c)
point defects
81- ......... is a heat treatment usually taken place after
quenching of steel in water. (a) annealing, (b) stabiloizing and (c) tempering
82-Pure copper exposes to cracking in ...... Solution. (a)
ammoniac, (b) nitrate and (c) sulphate
83-Silicon is one of the principal used in
steelmaking. (a) deoxidizers, (b) desulphurizes and (c) reduction
84-Mn is added to steel as a powerful deoxidi zer. (a) true or (b) false
85-Bonding in molecular chains is ........... . . (a) ionic, (b)
covalent and (c) metallic
86-Pyrometer is used to measure temperature range between ......... oC.
(a) 700-2000, (b) 10-1000 (c) 2000-5000
87-The total number of Bravais crystal lattice is ........... .. . (a) 2, (b) 5,
(c) la and (d) 9
88-Dislocation climb isnot thermally activated process. (a) true or (b) false
89-Blue brittleness isnot due to strain aging. (a) true or (b) false
90-In creep resistant steel, the precipitates are carbides. (a) true and (b) false
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3- In the network representation of DP models. The nods represent the state
values at each stage and the arcs represent the:
a- Feasible alternatives.
b- Optimum altematives.
c- Best alternatives.
4-The optimal solution of a two - person zero - sum game always represents a
saddle point regardless of whether the players use:
a- Mixed strategies.
b- Pure strategies.
c- Pure or mixed strategies.
5- Group Technology or GT is defined as a manufacturing philosophy in which
the parts having similarities --------- are grouped together to achieve
higher level of integration between the design and manufacturing functions of a
firm.
a- Geometry,
b- manufacturing process
c- Function
d- All above
6- The setup cost is an inventory situation is independent of the:
a- Size of the order quantity.
b- Number of the orders.
c- Inventory cost.
7- Every two - person zero -sum game can be represented by a pair of:
a- Primal - dual linear programs.
b- Dual linear programs.
c- Primal linear programs.
a
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8- The use of the normal distribution to compute the probabilities of events in
PERT becomes more accurate with the increase in the number of activities
leading from the:
a- End solution.
b- State point to the event under consideration.
c- Critical path.
9- In a continuous review inventory system, the reorder point usually occurs
after the inventory falls below its:
a- Minimum level for the cycle.
b- Maximum level for the cycle.
c- Mean level for the cyglg
10- In decision under uncertainty, the Laplace criterion is the least conservative
while:
a- The maximum criterion is the most conservative.
b- The minimum criterion is the rnbst conservative.
c- The mini max criterion is the most conservative.
1 1- If a sample of parts is measured and the mean of the measurements is outside
the control limits, the process is
a .in control, but not capable of producing within the established control limits
b .out of control and the process should be investigated for assignable variation
c .within the established control limits with only natural causes of variation
d .monitored closely to see if the next sample mean will also fall outside the
control limits
e .none of the above
12- When a sample measurement falls inside the control limits, it means that
a.eachunit manufactured is good enough to sell
b .the process limits cannot be determined statistically
c .the process output exceeds the requirements
d .if there is no other pattern in the samples, the process is in control
e .the process output does not fulfill the requirements
13- The causes of variation in statistical process control are:
a .cycles, trends, seasonality, ffid random variations
b .producer's causes and consumer's causes
c .mean and range
d .nafural causes and assignable causes
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L4- Asample of parts is measured.The mean of this sample is inthe middle of the
control limits, but some individual parts measure too low for design specifications
and other parts measure too high.Which of the following is true?
a .Thi process is out of control, and the cause should be established.
b .ThJ process is in control, but not capable of producing within the
established control limits.
c .The process is within the established control limits with only natural causes
of variation.
d .The process is outside the established control limits with only natural
causes of variation.
e .The process is in controlrahdthere is nothing to worry about.
l5- The type of inspection that classifies items as being either good or defective is:
u.u-iubl. inspection
b.attribute inspection ' '
c .fixed inspection
d .all of the above
e .none of the above
16- The X-bar chart tells us whether there has been a:
a.garnor loss in dispersion
b .change in the percent defective in a sample
c .change in the central tendency of the process output
d .change in the number of defects in a sample
e .none of the above
17- To set X-bar chart upper and lower control limits, one must know the process
central line, which is the:
a.average of the sample means
b .total number of defects in the population
c .percent defects in the population
d.size of the population
e .average range
18- The statistical process chart
output is the:
a.X-bar chart
c.R-chart
e .AOQ chart
used to control the number of defects per unit of
b.c-chart
d .pchart
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b .DFX index:
19- Metadata are
20- Which of the following is true regarding the process capabilrty index Cpk?
a .A Cpk index value of 1 is ideal, meaning all units meet specifications.
b .The larger the Cpk, the more units meet specifications.
c .The Cpk index can only be used when the process centerline is also the
specification centerline.
d .Positive values of the Cpk index are good; negative values are bad.
e .None of the above is true.
21- Design for assembly )DFA ,(fudiixcan be measured as?
a .DFX index
(theoritiial minumam number o f p arts) X (6 second)
e st emat e d t ot aI as s emb lytime
second)
c .DFX index:
t he or it i c aI mitrum am nutnb e r o parts) (3 second)
estemoted total
d .DFX index:
e stemate d tot aI as s emb lyt
(the or itic al minumam nutnb er o f p art s) (3 second)
22-The functions of CAD include all of the
a . geometric modeling
b .engineering analysis
c . automated drafting
d . process planning
e . kinematics
23-Te components of IS are:
except
24- Which of the following makes products that are
a. using less materials
b. more recycled materials
c. using less energy
d. using less harmful ingredients
e. all of the above
ly to the environment?
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26. a
25- Reducing the complexity of a product
maintainability for use are activities of
a. Product Life cycle Management (PLM)
b. product-by-value-analysis
c. manufacturability and value engineering
d. organizing for product develofiment
e. design for destruction (DFD)
and improving a producfs
26- The input to the CAPP system will most pro ybea froma
CAD database.
a- Solid model.
b- Inrtialization function
c- Process detrn-ition
27- Process planning is a common task in metal working industries.
a- Small batch. . '
b- Discrete parts
c- Both a and b.
Cost function information can be inc
automatic system.
a- Cost analysis.
b- Time standards.
c- Quality standards.
in a CAPP system, using an
28- Apart family is a collection of parts which are ilar either because of -------
or because similar processing steps in their manufacture.
Geomefiy and accuracy.
Geometry and size.
Size and accuracy.
In the ---- coding structure, the i ion of each symbol in
the sequence is fixed and does not depend the value of the preceding
digits.
a- Hierarchical type
b- Chain type.
c- Hybrid type.
30- The OPITZ coding system consists of;
a- Seven digits.
b- Eight digits
c- Nine digits.
."'t s
a-
b-
c-
29-
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27. g
31- The MICLASS classification number can range from:
a- l0 - 12 digits
b- 10 - 30 digits
c- LZ - 30 digits
32- A process plan can be retrieved using any of the data fields contained in its
a- Header.
b- List
c- Standard string
, /,i./ '
33- ----- is an integral part of TOYOTA production system.
a- CIM.
b- Lean manufacturing.
c- Concurrent Engineering.. '
34- is engineering a product in such a manner that in
case there is a malfunction; it can be easily attended to.
a- Maintainability
b- Reliability
c- Serviceability.
35- A form, in either diagram or table format, that is prepared in advance for
recording data is known as a:
A. Cause-and-effect diagram.
B. Pareto chart.
C. Flow chart.
D. Check sheet.
37- Which of the following tools are appropriate for a quality engineer to use in
qualiffing a process that has variable data?
1. An X bar and R control chan 2. A histogram
3. c chart 4. p chart
A: I and 2 B: 2 and 3 C:3 and 4 D:1,2 and 4
38- A quality engineer discovers that an alloy with strength lower than
specification was being used due to tremendous cost savings. There have been
no instances of field failure. At this point, the quality engineer should:
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28. A. Increase the number of field failure evaluations performed.
B. Adjust the specifications based on the field performance history.
C. Document the findings and take no furlher action.
D. Report the discovery to appropriate supervision and request corrective
action.
39- If it is determined that the quality manual does not represent the quality
system, the auditor should:
A. Ask to see additional records to veriS findings.
B. Contact purchasing to review the conhact.
C. Stop all further shipments,?','
D. Request a meeting with the supplier's management.
40- Which of the following analyses is best used to study the potential failures in a
system ?
A. Failure analysis. B. Fault tree analysis.
c. Reliability allocation analysis. D. pareto analysis.
41- What are the phases of design process?
42-How Qssp can be decreased 2
43- Define consumer's risk . How does it relate to the errors of hypothesis testing?
What is the symbol for its value?
44'what do the terms producer's risk and consumer's risk mean?
45- what is the pulpose of the operating characteristics curve?
46- communication between database different schemas is through:
7
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29. A: LAN.
B : Manufacturing Protocols.
C: DBMS.
47- Their main end -user applications are; retrieval, updating, insertion, deletion,
ordering and sorting, they are:
A: Databases.
B: Servers.
C: Interfaces.
48- -----It is an iterative IS deu"*;<ipment process
A: RAD
B: JAD
C: CASE
49-Dataand Information could be stored in
A: DBs
B: Data warehouses
C: Both
50- Databanks are classified as g'pe of,
A: Management IS.
B. DB
C .DSS.
51- Firewall is:
A- Hardware
B- B- Software.
C- C- Both.
51- Encryption is:-
A: A digital code for security purposes.
B: A process for preventing intrusion.
C: Most famous type of Virus
52- Financial, sales and marketing ISs must be
A: Built in ERP system
B: Integrated with ERP
C: provided when needed
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30. 53- R-DB basic operations are;
A: Select, Join, and delete.
B: Select, joint, and project.
C: Select, Joint, Project, and delete.
54 -Multi-dimensional DBs are easier to maintain than
A: R-DBs.
B: O_O DBs.
C: Both.
55- An organizational information system consists of:
A: Two Subsystems are; Executive and Functional Subsystems.
B: Three Subsystems agp,:'Executive, Functional, and human Resource
Subsystems.
C: Three Subsystems are; Executive, Functional, and manufacturing
Subsystems.
56- Web Technologies are:
A: Internet and computer networking.
B: Internet, computer networking, video Clips, and sound Clips,
C: Intemet, computer networking and multimedia.
57- Cellular Manufacturing is
58- All project's managers concerned about:
a- Time, cost, labor.
b- Machines, money, time, labor.
c- Time, cost, quality
d- Activities, cos! labor, stockholders.
e- All above.
59- . Just-in-time techniques are applicable to:
a- Purchasing, production, and distribution.
b- Purchasing and sales.
c- Production.
d- Production and distribution.
60- Applying the concepts ofjust-in-time tends to reduce the cost of
a- handling incoming material
b- Materials storage.
c- Materials movement inside the plant.
d- All above.
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31. 61- Green products are -----
62-Operations management is applicable
a. mostly to the service sector
b. to services exclusively
c. mostly to the manufacturing sector
d. to manufacfuring and service sectors
e. to the manufacfuring sector exclusively
63- Walter Shewhart is listed among the important people of operations
management because of his contributions to
a. assembly line production
b. measuring the productivity in the service sector
c. Just-in-time inventory methods
d. statistical quality control
e. all of the above
64- Henry Ford is noted for his contributions to
a. standar dization of parts
b. statistical quality control
c. assembly line operations
d. scientific management
e. time and motion studies
65.- Taylor and Deming would have both agreed that
a. Whirlpool's global strategy is a good one
b. Eli Whitney was an important contributor to statistical theory
c. management must do more to improve the work environment and its
processes so that quality can be improved.
d. productivity is more important than quality
e. the era of Operations Management will be succeeded by the era of scientific
management
66 - Who among the following is associated with contributions to quality control in
operations management?
a. Charles Babbage
b. Henry Ford
c. Frank Gilbreth
d. W. Edwards Deming
e. Henri Fayol
II
lt
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32. 67-The field of operations management is shaped by advances in which of the
following fields?
a. chemistry and physics
b. industrial engineering and management science
c. biology and anatomy
d. information sciences
e. all of the above
68- Materials that are re -melts
a- Thermosetting plastic
b- Metals like Fe and Cu.
c- Wood
d- All above
69- Magnetic Particle testing is used for -------
70- Visual Inspection
71- Production rate mean
a- Productivity
b- Production line
c- Quantity produced per unit time
d- All the production
i
72- Almost all castings are subjected to certain degree of visual inspection
73-Typical differences between goods *Ar"r(rines do not include
a. cost per unit
b. ability to inventory items
c. timing of production and consumption
d. customer interaction
e. knowledge content
74- .Which is not true regarding differences between goods and services?
a. Services are generally produced and consumed simultaneously, tangible
goods are not.
b. Services tend to be more knowledge-based than products.
c. Services tend to have a more inconsistent product definition than goods.
L7
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33. d. Goods tend to have higher customer interaction than services.
e. None of the above are true.
75- The marketing function's main concem is with
a. producing goods or providing services
b. procuring materials, supplies, and equipment
c. building and maintaining a positive image
d. securing monetary resources
e. generating the demand for the organization's products or services
76. Current trends in operationsr;r*riagement include all of the following except
a. Just-in-time perfonnance
b. rapid product deVelopment
c. mass customization
d. empowered employees
e. mulss production
77-The simplest definition of Quality is:
78 -the term "Six Sigma" is
a- * 3 sigma
b- + 6 sigma
c- 6 sigma
d- 12 sigma
79-Te famous Deming's principles are:
a- l0
b- 12
c- 14
d- 16
80- Overhead cost includes
81- Profitability index is equal to -------
82- Net Present Value of a project is equal
83- is not suitable to represent the progress in project schedule.
84- PPERT and cPM are ------tools based on the use of a network model.
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34. b?
_(,r
85- Quality control is:
a-Quality control describes the ways for making money in business
r- Quality control describes the directed use of testing to measure the
achievement of a specified standard.
c-Quality control describes the ways to control of the consumer demands.
d- None of the above.
86- Which of the following tools would be of the greatest use for finding the most
eflicient path and realistic schedule for the completion of a project ?
A. Interrelationship diagram. . ,.."
B. Activity network diagram.
C. Tree diagram.
d. Affinity diagram.
87- Reliability may be defined as:
a- The capacity of a device or system to perform as designed.
b- The resistance to failure of a device or system.
c- The ability of a device or system to perfonn a required function under stated
conditions for a specified period of time.
d- All above.
88- Which of the following lot-sizing-techniques results in the lowest holding
costs?
a. lot-for-lot
b. EoQ
c. part-period-balancing
d. Wagner-Whiten algorithm
89- PERT is basically concerned with obtaining
a- The trade between cost and time.
b- Fixed costs for all the activities.
c- any duration to complete the project
d- None of above.
90- From Bathtub Curve of new product, the failure rated more at:
a- The start of the curve.
b- The end of the curve
c- At the middle of the curve
d- Both a and c
13
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36. t
,)
!.t
eEry trdir oa'a+3 /olg:5r!l Lt,lrt i11y$i.ll4+lLtt
',,,itl3!l
Olr!.tl
20L2-20L3
Q1-The abrasive Slurry is:
a) Solution used in water jet machining
b) Mixture of abrasive grains and the carrier fluid, generally water
c) Mixture of NaCl in water
d) Mixture of abrasive and air
Q2-The gases commonly used in LASER are:
a) He
b) Co2
c) Argon
d) All in a, b and c
. Q3-
In
water jet machining, the of water required may reach to:
a) 40 bar
b) 400 bar
c) 4000 bar
d) 40000 bar
Q4- Cutting speed (V"), chip flow speed (Vs) and chip contraction coefficient(K), can be
correlated by the following formula:
a) Vc/V= K
b) V-V = 1lK
c) Vc+V =K
Q5- In orthogonal cutting process, the chip thickness is measured as 5 mm, the feed rate
was 1 mm/rev, then the value of chip contraction coefficient will be:
Q6- The Maximum surface damage is obtained ( in non-conventional machining) in:
a) PAM
b) LBM
c) EBM
d) EDM
Q7- What is the usual velocity of electron in electron beam machining:
a) 25o/o of the velocity of light
b)50% of the velocity of light
a)1
b)5
c)2
d) 0.8
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37. t
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c)75o/o of the velocity of light
Q8-Which of the following stresses is imported for chip formation:
a) Tensile stress
b)Shearing stress
c) Compressive stress
Q9-Last element of tool geometry is:
a) Side cutting edge
b)End cutting edge angle
c) Nose radius
Q1O-Chip thickness ratio is the ratio of:
a)Chip thickness to uncut thickness
b)Uncut thickness to chip thickness
c)Cutting speed to chip velocity
d)Chip velocity to cutting speed
Q1 1-Which of the following elements is the chief constituent of super HSS:
a)Nickel
b)Cobalt
c) Titanium
Q12-lnserts are usually made of:
a)HSS
b)Ceramics
c) Cemented carbide
State by true or false the followings.
Q13- In plane - strain forging process, the hydrostatic pressure is zero.
Q14- ln extrusion process with semi- angle die 90', the friction factor is one.
Q15- The principle stresses are the roots of equationo3 - h o2 + lz o - le = 0, In plane -
stress lg = 0.
Q16- The rigid - perfectly plasticmaterial deforms plastically at constant stress.
Q17- The Levy - Mises flow equation isdel - dezl 01- c2= des - dezl oz- oz.
Q18- The condition of instability, d oomar/ de = 0
Q19- ln metal forming process.?s (Normal stress/ Shear stress = Coefficient of Frictiqr).
gv
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38. I
t,!
Q20- Where frictionless sliding occurs along the boundary surface, the slip lines intersect
theboundary line at45'.
Q21- The types of stresses induced in the rim of flywheel are, the tensile stress,
bending stress and shrinkage stress.
Q22- In determination tensile stress induced in the rim of flywheel due to the i
centrifugal force, the rim is consider as a thick cylinder subjected to internal pressure.
Q23- ln case of a pressure vessel, if the wall thickness is less than t/IO of the diameter
of the shell, then it is called a thin shell.
Q24- In case of a pressure vessel, if the wall thickness is greater than 1/10 of the
diameter of the shell, then it is called a thick shell.
Q25- ln case of pressure vessel, if the internal fluid pressure is less than lU6l of
allowable tensile stress, then it is called a thin shell.
Q26- ln case of vessels having closed ends; the circumferential or hoop stresses are
induced by the fluid pressure, whereas in case of closed ends, longitudinal stresses in
addition to circumferential stresses are induced.
Q27- The effect of curvature of the cylinder wall is neglected, when analysis the
stresses induced in a thin cylindrical shell.
Q28- A manufacturing application of
a. Boundary representation
is NC cutting simulation.
b. Sweeping
c. Cell decomposition
Q29-Euler's formula states that given a polyhedral without any holes, where
F, E, and V are numbers of faces, edges, and vertices respectively.
a. F-E+V=2
b. F+E-V=2
c. F-E-V=2
Q3O-The main machinability criterion for the ISO standard is
a. Tool Life
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39. t
t
tal t
b. B-Spline
c. Bezier
Q38- Thermal resistance equal (R):-
.) R+
b) R=A
c) R+
Q39-The ratio of specific heat in (y):-
u) v=1*
b) Y=1*
Q U=TE
d) y+-1
Q4O- lHeat added = work done by the gas] when
a) no change in temperature
b) no change in pressure
c) no change in volume
Q41- The unit of the convection heat _transfer coefficient (h)
a) (Wm2.c)
b) (Wm.c)
c) (Wm2)
Q42- The convection heat transfer resistance (R) is
n(#
b)(#
")(#Q43-work done during polytrophic process (w) is
a)W='#
b)w:'#
c)w:ry
Qr$4- In polytrophic process
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40. a
It
b. Chip Control
c. Material Removal Rate
Q31-Ncmachinescanbec|assifiedaccord|ngtopos|tioningsystemsto-point
to point and continuous Path.
a. Open Loop and Closed Loop.
b. lncremental and Absolute.
Q32- A resolver is similar to generator,
a. DC
b. Ac
Q33- Articulated Robot has rotational axes.
a. three
b. two
c. four
Q34-Whenthecutterpathisgeneratedusinga-,thereisnoway
ofdetectinginterference between the tool and the part and the fixture.
a. surface model
b. solid model
c. wire-frame model
Q35- The smaller the tolerance, the cutter path steps have to be taken.
a. less
b. more
Q35- is a condition of a surface of revolution in which all pointsof the
surface are equidistant from a common axis.
a. Angularity
b. Circularity
c. Cylindricity
Q37- A
a. NUBS
curve is defined by its control points, knot spacing and weights.
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41. a
.,
ta
Q45- for material that is opaque the net sum of the reflected, absorbed and
transmitted energy when used in Stefan-Boltzmann equation is
a) e*c:l
b) (+e:1
c) c+(:l
Q46- for a grey surface, the emissivlty ({s) which is the ratio of the grey surface
emission to the black surface emission, mustbe :
a)ts4<ten
u)€sf>r
" F.-ft - 1
'' t" lu
Q47- chose the correct form for the following coefficients of the thermal conductivity
(KXw/m".k)for the fol lowi ng material;-
a) kwood>kclass>kat is c"
b) kclas*kwood>kat is c"
c) kat is c'>kclasPkwood
Q48- For deep drawing operation suggests
a- good lubrication between blank and die face and no lubrication between blank
and punch.
b- good lubrication between blank and punch and no lubrication between blank
and die face.
Q49- Formation of ears at the free edges of drawn cylindrical cup is caused by ------
--and is undesirable in these circumstances since it represents a waste of material.
a- planer anisotropy
b- normal anisotropy
Q50- The hollow-sinking method. In practice, the maximum reduction in diameter is
approximately --- percent.
a- 30
b- s0
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42. {
.t
tr
c- 52
Q51- ------------ deals with the methods of calculating stresses and strains in a deformed
body after part or all of the body has yielded.
a- Theory of plasticity
b- Theory of elasticity
Q52- strain rate tends to increases flow stress during hot forming.
a- Increasing
b- Decreasing
Q53- For a hardening material
a- the yield stress in shear K remains constant along a slip line, but the pressure P
may vary
b- the pressure P remains constant along a slip line, but the yield stress in shear K
may vary
c- the yield stress in shear K and the pressure remain constant along a slip line, the
pressure P
Q54- The principal stress are the stresses acting on the planes----
a- where the shear stress is zero
b-where the shear strain is zero
Q55- The two principal stresses will act to the direction of maximum -----------.
a- 45' , shear stress
b- 90o , shear strain
Q56- Because -------- -- are used industrially, and heavy reductions are
commonly taken, the redundant work factor is often small in practical wire drawing.
a- low die angles
b- high die angles
Q57- In the rolling operation with------- (P+/S) = (h/ha) .ut on the exit side of
the neutral point.
a- no external tension
b- with front and back tension
c- wjth only back tension
t
p
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43. j
I
It
Q58- Perspective drawings have vanishlng polnts.
In perspective drawings the lines of proJectlon
a. diverge
b. converge
c. radiate
d. coincide
e. are concurrent
Q59- Angular, or two-point, perspectlve has two vanlshing points.
Which type of perspective drawing has three vanlshlng points?
a' Pastoral
.,, ,,,
b. pictorial
c. parallel
d. angular
e.oblique
Q50- This expression suggests a creature that would usually have this perspective.
An angular perspective drawing in which the viewer is looking up is known as a(n)
-grid.
a. worm's eye
b. bird's eye
c. exterior
d. interior
e. none ofthe above
Q61- Only two of these answers are types of oblique projection.
The type of oblique projection where the length of receding lines is one-half true
length is
a. isometric.
b. diametric.
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c. trimetric.
d. cabinet.
e. cavalier.
Q62- In other words, a sloping surface does not follow the plane of projection.
In isometric drawing, a sloping surface appears as a(n)
a. ellipse.
b. nonisometric line.
c. oblique line.
d. oblique surface.
e. true shape.
Q63- CSG and BREP models are two examples of this type ofmodel.
In CAD, three-dimensional geometric models can be made as wire-frame models,
surface models, or
a. geometric elements
b. complex surfaces
c. solid models
d. perspective models
e. isometric models
Q64- This is the first form of 3-D model used in engineering.
The easiest form of3-D geometric model but the least suitable for manufacturing and
engineering is _
a. solid modeling.
b. wire-frame modeling
c. surface modeling
d. image modeling
p
I
B
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45. ,tI
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e. design modellng
q65- Thls term mtans thc polntt oflntarsectlon of angles.
Wire-frame models are developed by uslng only edges and _
a. Views
b. surfaces
c. sections
d. lines
e' vertices
..";...,'
Q66- The resulting models look a bit like they are made up ofnetting.
Surface models allow the surfaces ofa part to be accurately represented as
a. rendered surfaces.
b. blended surfaces.
c. smooth surfaces.
d. geometric meshes.
e. geodesic meshes
Q67- are suitable to reduce vibration in machine tools
a- Spur gears
b- Bevel gears
c- Rack& pinion
Q68- is used for indexing in the automatic cutting machines
a- Geneva-type gearing
b- diving-key feed box
c- 4bar sliding mechanism
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Q69- In the feed boxes, all gears are in mating.
a- Norton
b- diving-key
c- Meanders
Q70- For machine tools, the speed proportioning based on geometric progression
could be represented as:
b_o=,f,;/t_J
Q71- For machine tools,the speed proportioning based on arithmetic progression
could be represented as:
a- l" = ([,nin -[,n"*)l(z-I)
b-1"=(fln,o -tr.in)/Q-z)
c-1,=(D."* -[o,io)l@-
Q72- is represents the stiffness units of the lathe main spindle
a- N/pm
b- N/m
c- N/cm
Q73- Based on Acherkan law, there are ----------- for a gear box with 6 speeds
a- 8 design probabilities
b- 6 design probabilities
{
w
!
I
1l
t.
(or"* /trr,n)
(n."* /nr,o)
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47. r."'
P' i
c- 4 design probabilities
Q74-The inclined bed is usually used In --..-..r..--
a- manually operated lathe
b- feed boxes
c- numerical control machines
Q75- We always use --------- to reduce the machine toolframes.
a- idler gears
b- active gears
c- mating gears
.,.!"/
Q75- The main principle of narrow guides is: -------
a-l=b
b-l>b
c-b2b-d
Q77-log39 is equat to:
a-3
c- tl3
Q78- parabolic spiral equation is:
a- r=ade
C- r=a0
Q79- The surface 22 =r-r2 reprcsents
a- Sphere
b- 27
d-2
b-
d-
, =oJE
a
f =--
.le
b- Hyperboloid
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48. .*I
ca
c- Cylinder d- cone
Q80- v = 5 (sin x + cos r) is the expricit particurar sorution to the DE
,12 r,
a- ji+ l=SOsin rcosx
)2.,
c- (#)'+.v=50(sinx+cosx)
dx''
Q81- Which of the phasor diagrams
figure represents
(VR =Vl - V2) ?
b- #* r'=loosinxcosr
d- ft* r'=so
shown in
Q82- The graph of y=21sn3O is:
A continuous, periodic, even
a-
function. b-
_ A discontinuous, periodic, odd
c-
function.
non-periodic,
non-periodic,_. A continuous,
o-
even function.
Q83- Three forces of 2N, 3N and 4N act as shown in Figure.
The magnitude
of the resultant force is:
a- 8.08N. b- 9.2N.
c- 7.L7N. d- -8.08N.
t
liP,
a- (i). b- (i i).
c- (iii). d- (ivl.
A discontinuous,
odd function.
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49. !et
A' .
' q84- Point (-4,31in polar coordinate is:
a- (5,2.498 rad)
c- (5,36.87o)
b-
d-
17,36.87o1
(5,323.13o)
Q85- A graph of resistance against voltage for an
electrical circuit is shown in Figure. The equation
relating resistance R and voltage V is:
a- R=1.45 V + 40 b- R=0.8V+20
c- R=1.45 V + 20 d- R=1.25 V + 20
I
I160
1{5
r40
12$
100
80
70
60
40
&
20 40 60 Bo 100tari
Vo[agB Y
Q86- The n unknowns in equivalent upper triangular system in Gauss
eliminationmethod is solved by:
a- forward substitution
b-mixed substitution
c-backwa rd su bstitution
State True or False for the following:
Q87- gauss -Seidle iteration method always converge.
Q88- Trapezoidal rule is more reliable from Simpson's rule.
Q89- Simpson's 3/8 rule is more exact from Simpson's L/3 rule.
Q90- Relaxation method is used in Guase- elimination when the solution is diverging.
t
F
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51. :::FrPT*1,ffit:{5iE4Yg,+. -
' r Q1O- Which of the following processes is termed as a micromachining operation
-' a) electric discharge machining
b) electrochemical machining
c) Electron beam machining.
State True or False for the following:
Q11- Wires are manufactured by hot drawing process.
Q12- The extrusion ratio = final thickness / Initial thickness
Q13- The coefficient of friction in cold working<the coefficient of friction in hot working.
Q14- The stress - strain curve relationship o = Y + K€n is applied in hot working
Q15- ln plane - stress e1 = e2and e3 = 0.
Q16- In geometric modeling, the most b6mmon form of curve representation has been the
implicit form than parametric form.
Q17- The cubic spline is represented by a piecewise cubic polynomial with third order
derivative continuity at the common joints bqtween segments.
Q18- The normal to a parametric cubic curve at any specific point is found by the dot-product
of the parametric derivatives at the point in question.
Q19- Vertex, Edge and Face considered as the main entities in any B-Rep model.
a. geometric
b. topological
c. oPerator
Q20- CAD/CAM modelers based on _modeling, contains geometric and topological
structure and support geometric characteristics of a part, that is the shape of holes, slots,
ribs, and so forth.
a. feature
b. CSG
c. B-Rep
d. faceted
Q21- Each specific machine function has a
a. lD code.
b. coordinate point.
c. axis designate.
d. letter address.
Q22- How is shear strength S related to tensile strength TS?
(a)S=0.7TS
(b)S=1.155TS
(c) S = 1.1TS
Q23- What is viscoelasticity, as a material property?
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52. (a) Viscoelasticity refers to the property most commonly exhibited by polymers that defines
the strain of the material as a function of stress and temperature overtime. lt is a
combination ofuiscosity and elasticity.
(b) Viscoelasticity refers to the property most commonly exhibited by polymers that defines
the strain of the material as a function of strain and temperature over time. lt is a combination
ofuiscosity and elasticity.
Q24- The plastic region of the stress-strain curve for a metal is characterized by a
proportional relationship between stress and strain:
(a) true
(b) false.
Q25-Which one of the following types of stress strain relationship best describes the behavior
of brittlematerials such as ceramics and thermosetting plastics:
(a) elastic and perfectly plastic,
(b) elasticand strain hardening,
(c) perfectly elastic,
(d) none of the above.
Q26-lndicate the mathematical equation for the flow curves.
(a)The flow curve is defined as Y1- Ken
(b) Yf = Ken+1/n
(c) Yr = Ken/n+1
Q27-The production of tubing is possible in indirect extrusion but not in direct extrusion:
a) true
b) false
Q28-A round sheet metal slug produced in a hole punching operation will have the same
diameter aswhich of the following?
(a) die opening
(b) punch
Q29-Gay -Lussac law is:
a) PrVr=PzVz
b)Y1=]2'Tr T2
c)&-P''Tt T2
Q30-Specific heat at constantvolume (Cv) is:-
^r -Y-1o/ -;-
b) =A' 7-v
c) =R, V-L
Q31{he index (n)of the general lawof expansion or compression of a perfect gas (PVn=
constant) at constant volume process is :_
a) n=0
b) n=-
c) n=1
a
i;
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53. ' Q32- The heat absorbed (in heat units) for isothermal process is:-
a) P1v1 lnf;
b)0
c) McV(T2-T1)
Q33- The change in entropy of a(m Kg) a perfect gas during a polytrophic process -
according to thelaw (PVn=c) is :-
a) s2-s1 =mnffilnfr
b) s2-s1 =mRffirnfr
c) s2-s1 =mnffirnf
Q34- Draw the graPh x= Y2 and x = Y + 2
Q35- Radians can be converted to dqgr_ee by multiply:
A) 180/n
B) n/180
C) 2nl180
D) 2n
Q36- Givethe meaning of the function 1x-+; )+ y2=5.
Q37- Find the projection of the vector 2i - 3l + 6k on the vector i + 2i + 2k.
Q38- Find the direction cosine.of the line joining the points A(3,2,-4 ) and B (1,-1,2)
idx
Q39- By evaluating the integral J 1 + ,] by numericalmethod we can obtain anapproximation
0 r-
value of: take h:0.2
a- log;2
b- 0.7837
c-e
d-log1s 2
Q40- Write down Simpson's 3/8 rule.
Q41- Gauss elimination and Gauss Jordan are:
a- Iterative method
b-Directmethod.
a- Mixed method
Q42- State the values of }uWhen using relaxation in Gauss- Seidle iterationmethod.
Q43- Write down the condition for convergence of Gauss -Seidle iteration method.
Q44- The n unknowns in equivalent upper triangular system in Gauss eliminationmethod is solved by:
a- Forward substitution
b-Mixed substitution
c-Backward substitution
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54. a
. ; ' Q45- In case of two stroke internal combustion engines, the energy is developed during power stroke
.' ' only.
Q46- In case of two stroke internal combustion engines, no energy is developed during compression
stroke.
Q47- In case of four stroke intemal combustion engines, no energy is being developed during suction,
compression and exhaust strokes. .
Q48- The difference between the maximum and minimum speeds during a cycle of flywheel is called
the maximum fluctuation of speed.
Q49- The ratio of maximum fluctuation of speed of flywheel to the mean speed is called coefficient of
fluctuation of speed.
Q50- The permissible values for coeffrcient of fluctuation of speed of flywheel is always less than (l).
Q51- In an isometric drawing, all three principal planes are inclined,
and circles normal to a principal plane would appear as
a) circles
b) ovals
c) ellipses
d) all of the above
e) none ofthe above
Q52-This is generally the preferred dimensioning method in most engineering drawings.
_ dimensioning is the preferred method of dimensioning isometric drawings.
a) Aligned
b) lsodirectional
c) Monodirectional
d) Bidirectional
e) Unidirectional
Q53- This method does not require any freehand sketching.
For manual drafting, the most efficient method for creating isometric circles is
a) by the offset method.
b) by the 4-point method.
c) using a template
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55. !.r
d) by sketching.
e) by the grid method.
Q54- The speed proportioning for machine tools could be classified as: ----'---
a) arithmetic& geometric progression
b) arithmetic& logarithmic progression,
c) logarithmic& geometric progression
Q55- In clutch gearing machine tool design
a) allgears are in mating 1"/ y'
b) just the working gears are in mating
c) just one gear are in mating
Q56- In machine tool design, Acherkan lawis considered to determine: --------
a) structuralformula
b) design probabilities
c) speed diagram
Q57- The gear pairs in feed boxes with diving-key could be reach to: ----------
a) 10 pair
b) 12 pair
c) 14 pair
Q58- In feed boxes, we have to use to get half or double of rotating speeds
a) Norton
b) diving-key
c) Meanders
Q59- The stick-slip phenomenon could be occur at ------
a) low slip velocity
b) medium slip velocity
c) high slip velocity
Q60- The stick-slip phenomenon occurs as a result of ------- start-stop motion
a- continuous
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56. ' "*-,rqiF:rqe*{e!45:T}is.iqrfr:}-.i.: r:i*is5:*1;rr@
t
a
' b- Periodica'
c- interrupted
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57. .l
r
t
O$r.. JSi,'+1,. .i"itiitlgtai.Yl 2o tZ - 2ot3
increases the corrosion resistance of steels
(a) Magnesium , (b) Manganese , (c) Chromium , (d) Silicon
2- In a coupling of Al and 2n,... .... is corroded even through it is cathodic
to ...... . according to EMF series.
(a) Si , (b) Al , (c) Zn
3- Metals like ......... and . ... are most suitable for high temperature service.
(a) Pb, (b) Sn, (c) Al , (d) Cr
4- In ..... protection the anode is coroded.
(a) Anodic , (b) Coating , (c) Calhodic
5- ...... is usually caused,S{the breakdown or cracking of the protective film
on a metal at specifrc points.
(a) Fretting corrosion , (b) Galvanic corrosion , (c) Pitting corrosion
6- The damage due to corrosiop is more in soft materials than in hard
materials.
(a) Crevice , (b) Selective , (c) Galvanic , (d) Fretting
7- In corrosion the stresses should be tensile static and of suffrcient
magnitudes.
(a) Fatigue, (b) Friction ,(c) Crevice , (d) Stress
8- ..... consists in placing of a comparatively thick lining upon the metal
surface.
(a) Galvanizing , (b) Metal spray, (c) Cladding
9- For a protective oxide film, the pilling Bedworth ratio should be ....
(a) Equal , (b) Slightly less than , (c) Slightly more than
10-Due to polarization of the anode,the potential of the anode becomes
(a)Neutral , (b) More positive , (c) More negative
I I - The co-ordination number of simple centered cubic structure is
(a) Four (b) six (c) eight (d) twelve
l2-Atomic packing factor of a simple cube is approximately equal to
(a) 0.a $) 0.42 (c) 0.s2 (d) 0.8
l3-Total number of atoms in a body centered cube is
(a) One (b) Two (c) Three (d) Four
14- The covalent bond is formed by ----- between atoms.
(a) Sharing of electrons (b) Transfer of electrons (c) Sharing and transfer of
electron (d) Any of the above
l5-Bragg's law is given by the equation
(a) 2d2sin0:nlu (b) 2dsin20: n?,, (c) 2dsinO:n l, (d) 2d2sin0:nI2
l6-The inter planar spacing of the first reflecting plane (lowest 0) in F.C.C crystal is
l-
اا–دنواجما
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58. /- d ,,' A .. --- E
(a)
G (b) A (c) a (d) y'3
l7'... .... is the propcrty of steol due to which it can withstand the blow of
hammer.
(a) Hardness (b) Toughness, (c) Malleabitity (d) plasticity
l8- Muntz metal is an alloy of ....
(a) Zinc and lead (b) copper and zinc (c) tin and zinc (d) lead and white
metal
l9-Corrosion resistance of stainless steel is due to
(a) Chromium (b) Vanadium , (c) Carbon (d) Sulphur
20-Product of blast furnace isl.aidd ( as
(a) Pig iron (b) Cast iron (c) Wrought iron (d) Malleable iron
2l-The test uses a diamond indenter in the shape of an elongated
pyramid. * '
(a) Mohs (b) Knoop (c) Vickers
22-The stacking sequence of close packed planes in FCC is
(a) ABCABABC (b) ABABAB (c) ABCABCABC
23-In the ... the Burgers vector is parallel to the dislocation line.
(a) Scew dislocation (b) Edge dislocation (c) Complex dislocation
24-......... deformation of of a metal a bove the recrystallization temperature
(a) Cold working (b) Hot working (c) Plastic
25- ...... ... the pouring temperature minus the freezing temperature
(a) Superheat (b) Melting (c) Thermal arrest
26- ......... a three - phase reaction in which one liquid transforms to a solid and
a second liquid on cooling .
(a) Monotectic (b) Peritectic (c) Eutectoid
27- Elastomers are thermoplastic or lightly cross - linked thermosets that exhibit greater
than...... elastic deformation .
(a) 100 % (b)200% (c) 50 o/o
28- Shape memory alloys show a behavior.
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59. (a) Plastic (b) Elastic (c) Super plastic
29- ... ...... two phase microconstituent containing ferrite and cementite, that
forms in steels that are isothermally transformed at relatively low temperature.
(a) Pearlite (b) Martensite (c) Bainite
30-...... ..... a metastable phase formed in steel and other materials bv a
diffusionless thermal transformation.
(a) Martensite (b) Ferrite (c) Cementite
3l - ...... the test used to evaluate harden ability.
(a) Jominy test (b) Hardness test (c) Tensile test
32- the energy required to permit a precipitate to fit into the
surrounding matrix during nucleation and growth of the precipitate
(a) Strain energy (b) Stored energy (c) Stress energy
33- .. ....... a group of high carbon steels that provide combinations of high
hardness, toughness or resistance to elevated temperature .
(a) Alloy steel (b) Tool steel (c) High speed steel
34' ...... ..... the addition of heterogeneous nuclei a controlled manner to increase
the number of grains in a casting
(a) Flux (b) Ceramic particles (c) Grain refinement
35- Many materials can form crystal structures that change from one unit cell to another
at specific temperature these materials are termed
(a) Polycrystalline (b) Polymorphic (c) Polymers
36' ... . play an important role in diffusion of substitutional solid solution.
(a) Sliding (b) Vacancies (c) Porosity
37-The cleavage plane of the zinc crystal is .....
(a) (0001) (b) (l 120) (c) (0010)
38- --------- are low carbon , highly alloyed steels
(a) Dual phase steel (b) Maraging steel (c) Stainless steel
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60. t
I
39- The .. ....- is narrow bands of randomly oriented grains at the surface of
the casting.
(a) Chill zone (b) Columnar zone (c) Centrall Zone
40 - Silicon reduces the amount of carbon contained in the eutectic the carbon
equivalent is ......
(a) cE :%oc + % si (b) cE: %oc + l/3 si (c) cE :yoc+ %si
4l-The gray cast iron have free carbon as ....
(a) Flakes graphite . (b) Cementite (c) Nodular graphite .
42-The ( Al-Cu) alloys are hardened by three steps included ....
(a) Annealed +quenched + Normalizing (b) Solution annealing
+quenching+tempering (c) Solution annealing + quenching + aging .
43-Eutectic reaction is .....
(a) Liquid
- solid I + solid 2 (b) Liquid * solid I + Liquid 2 (c) Liquid - liquid I
+ liquid 2 .
44-The full annealing temperature for hypoeutectoid steel is ( 30 to 50oC ) over the line .
(a) ACM (b) A,3 (c) A I .
45- The normalizing temperature for hypereutectoid steel is is ( 30 to 50"C ) over the line
(a) ACM (b) A.3 (c) Al .
46-Ledeburite mixture of iron diagram is the eutectic mixture of .....
(a) Ferrite +pearite (b) Austenite * cementite (c) Ferrite * cementite .
47- Cementite or iron carbide have
(a) Chemical formula Fec contains 6.67% C (b) Chemical formula Fe2c contains
6.67% C . (c) Chemical formula Fe3c contains 6.67Yo C .
48- The iron alloys containing more than (2%C ) are known as ....
(a) Steels (b) Cast iron (c) Alloy steels.
49'The uPper- critical temperature line on hypereutectoid side of iron diagram is known
as ... .
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61. 50- Thc coollng nto In full annoaling ig .....t,r..t,,... cooling.
5l- Thc hoat tredod prcaoss that produco a sphcroidal or globular form of carbide in a
fenitic matrix aallod ..,.......,..
52. Martensite in steols is dcfined as .:..................,.,,
53- Pearlite phase nucleated by .......... crystal,
54-The bainites&ucturp isnu91e4tin9by..............,..,....... crystal.
::-.*:.*:::::..:ffil.
is the
:y
that ugua'v use for case hardening of
l{'
56- When the alloying elements (Ni, Cr ) are adding to st€el the TTT- diagram shifting to
57- Corrosion rate can be calculated from the iveight loss by the formula
58-Acid solution containing dissolved oxygen will be .... oorrosive than air-free
acid.
59-hon will not corrode in air-free water or seawater because there is no ...........
reaction possible.
60- Very pure water is much corrosive than impure or natural waters.
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63. Olt .c J{ir+U .,*"itiillOtALYl
increases the corrosion resistance ofsteels
(a) Magnesium , (b) Manganese, (c) Chromium , (d) Silicon
2- lna coupling of Al and 2n,... is corroded even through it is cathodic
to ...... according to ElvlF series.
(a) Si , (b) Al , (c) Zn
3- Metals like ......... and .... are most suitable for high temperature service.
(a) Pb, (b) Sn, (c) Al , (d) Cr
4- In .... protection the anode is coroded.
(a) Anodic , (b) Coating , (c) Calhodic
5- ... ... is usually caused.Sy the breakdown or cracking of the protective film
on a metal at sPecific Points.
(a) Fretting corrosion , (b) Galvanic corrosion , (c) Pitting corrosion
6- The damage due to corrosiop is more in soft materials than in hard
materials.
(a) Crevice , (b) Selective , (c) Galvanic , (d) Fretting
7- ln corrosion the stresses should be tensile static and of sufficient
magnitudes.
(a) Fatigue, (b) Friction ,(c) Crevice , (d) Stress
8- ..... consists in placing of a comparatively thick lining upon the metal
surface.
(a) Galvanizing , (b) Metal spray, (c) Cladding
9- For a protective oxide film, the pilling Bedworth ratio should be ....
(a) Equal , (b) Slightly less than , (c) Slightly more than
10-Due to polarization of the anode,the potential of the anode becomes
(a)Neutral , (b) More positive , (c) More negative
I l - The co-ordination number of simple centered cubic structure is
(a) Four (b) six (c) eight (d) twelve
12-Atomic packing factor of a simple cube is approximately equal to
(a) 0.4 (b) 0.42 (c) 0.52 (d) 0.8
l3-Total number of atoms in a body centered cube is
(a) One (b) Two (c) Three (d) Four
14-The covalent bond is formed by ----- between atoms.
(a) Sharing of electrons (b) Transfer of electrons (c) Sharing and transfer of
electron (d) Any of the above
l5-Bragg's law is given by the equation
(a) ia2sine:nf @) 2dsin20: n), (c) 2dsing:n 1. (d) 2d2sin0:n)'2
l6-The inter planar spacing of the first reflecting plane (lowest 0) in F.C.C crystal is
l-
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64. (.)* 0) h (c) a (d)..,6
17-... .... is the property of steol due to which it can withstand the blow of
hammer.
(a) Hardness (b) Toughness, (c) Malleability (d) Plasticity
l8- Muntz metal is an alloy of ....
(a) Zinc and lead (b) copper and zinc (c) tin and zinc (d) lead and white
metal
l9-Conosion resistance of stainless steel is due to
(a) Chromium (b) Vanadium , (c) Carbon (d) Sulphur
20-Product of blast furnace isku&(as
(a) Pig iron (b) Cast iron (c) Wrought iron (d) Malleable iron
2l-The test uses a diamond indenter in the shape of an elongated
pyramid. . '
(a) Mohs (b) Knoop (c) Vickers
22-The stacking sequence of close packed planes in FCC is
(a) ABCABABC (b) ABABAB (c) ABCABCABC
23-lnthe ... the Burgers vector is parallel to the dislocation line.
(a) Scew dislocation (b) Edge dislocation (c) Complex dislocation
24-.......... deformation of of a metal a bove the recrystallization temperature
(a) Cold working (b) Hot working (c) Plastic
25- ... . the pouring temperature minus the freezing temperature
(a) Superheat (b) Melting (c) Thermal arrest
26- ...... a three - phase reaction in which one liquid transforms to a solid and
a second liquid on cooling .
(a) Monotectic (b) Peritectic (c) Eutectoid
27- Elastomers are thermoplastic or lightly cross - linked thermosets that exhibit greater
than... elastic deformation.
(a) 100 % (b)200% (c) 50 %
28- Shape memory alloys show a ...... behavior.
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65. (a) Plastic (b) Elastic (c) Super plastic
29- ... ....... two phase microconstituent containing ferrite and cementite, that
forms in steels that are isothermally transformed at relatively low temperature.
(a) Pearlite (b) Martensite (c) Bainite
30-... ....... a metastable phase formed in steel and other materials by a
diffusionless thermal transformation.
(a) Martensite (b) Ferrite (c) Cementite
3 l - ... . . . .. the test used to evaluate harden ability.
(a) Jominy test (b) Hardness test (c) Tensile test
32 - .. the energy required to permit a precipitate to fit into the
surrounding matrix during nucleation and growth of the precipitate
(a) Strain energy (b) Stored energy (c) Stress energy
33- ... ...... a group of high carbon steels that provide combinations of high
hardness, toughness or resistance to elevated temperature .
(a) Alloy steel (b) Tool steel (c) High speed steel
34- ... the addition of heterogeneous nuclei a controlled manner to increase
the number of grains in a casting
(a) Flux (b) Ceramic particles (c) Grain refinement
35- Many materials can form crystal structures that change from one unit cell to another
at specific temperature these materials are termed
(a) Polycrystalline (b) Polymorphic (c) Polymers
36- ... .play an important role in diffusion of substitutional solid solution.
(a) Sliding (b) Vacancies (c) Porosity
37- The cleavage plane of the zinc crystal is .....
(a) (0001) (b) (l 120) (c) (0010)
are low carbon , highly alloyed steels38-
(a) Dual phase steel (b) Maraging steel (c) Stainless steel
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66. 39- The ....- is narrow bands of randomly oriented grains at the surface of
the casting.
(a) Chill zone (b) Columnar zone (c) Centrall Zone
40 - Silicon reduces the amount of carbon contained in the eutectic the carbon
equivalent is ......
(a) CE : %oC + % Si (b) Cg: %oC + l/3 Si (c) CE : YoC + %Si
4l-The gray cast iron have free carbon as .....
(a) Flakes graphite . (b) Cementite (c) Nodular graphite .
42-The ( Al-Cu) alloys are hardened by three steps included ... .
(a) Annealed +quenched + Normalizing (b) Solution annealing
+quenching*tempering (c) Solution annealing + quenching + aging .
43-Eutectic reaction is .....
(a) Liquid r solid I + solid 2 (b) Liquid
- solid 1 + Liquid 2 (c) Liquid - liquid I
+ liquid 2 .
44-Thefull annealing temperature for hypoeutectoid steel is ( 30 to 50"C ) over the line .
(a) ACM (b) A.3 (c) Al .
45- The normalizing temperature for hypereutectoid steel is is ( 30 to 50.C ) over the line
(a) ACM (b) A3 (c) Al .
46-Ledeburite mixture of iron diagram is the eutectic mixture of ....
(a) Fenite +pearite (b) Austenite * cementite (c) Ferrite * cementite .
47- Cementite or iron carbide have
(a) Chemical formula Fec contains 6.670/o C (b) Chemical formula Fe2c contains
6.67% C . (c) Chemical formula Fe3c contains 6.670/o C .
48- The iron alloys containing more than (2% C ) are known as ....
(a) Steels (b) Cast iron (c) Alloy steels.
49- The upper- critical temperature line on hypereutectoid side of iron diagram is known
as ......
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67. Ia
i. +t
50- Thc coollnl rutO In full anncaling ig ,,..r....i..,... cooling.
5l- The hoat trpatod prcocss that pmduoo a sphoroidal or globular form of carbide in a
feniticmatrixcallod .,............................
52. Martensih in stoels is dcflncd
T .:..................
53- Pearlite phase nucleated by .............,.... crystal,
54- The bainite shucture is nucloating by .., ... . ., ... .,,' . . .... ... crystal.
::*:.*:::..:tril.
is the rrrdcnss that usually use for case hardening of
("
56- When the alloying elerqents (Ni, Cr ) are adding to st€el the TTT- diagram shifting to
57- Corrosion rate can be calculated from the weight loss by the formula
58-Acid solution containing dissolved oxygen will be corrosive than air-free
acid.
59-Iron will not corrode in air-fipe water or seawater because there is no ...........
reaction possible.
60- Very pure water is much corrosive than impure or natural waters.
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