Samples of Competitive Examination Questions: Part XXXXXXIII
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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.
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Samples of Competitive Examination Questions: Part XXXXXXIII
- 3. اناأذج~~*****~~يااإ63 اءانوا***************يااإ1 ا ترا ا نا أ )ا راهوا( درا او اا تا اواادأنأر. يااإ ResearchGate : www.researchgate.net/profile/Ali_Al-Mosawi LinkedIn: www.linkedin.com/pub/ali-i-al-mosawi/61/364/654 Academia.edu: www.independent.academia.edu/AliIAlMosawi ORCiD : http://orcid.org/0000-0002-8688-3208 Publons: https://publons.com/author/551123/ali-i-al-mosawi#profile ResearcherID: www.researcherid.com/AuthorizeWorkspace.action Facebook: www.facebook.com/ali.ibrahim.12177276 Twitter: https://twitter.com/aliibrahim2008 Google+ :https://plus.google.com/+AliIAlMosawi/posts يااإ Ali Ibrahim Al-Mosawi Ali I.Al-Mosawi
- 16. - -qtF t n o.-'l;#'Jf$6.rtu L.ril /ols3s.r i-t-;.ll dilltl 4Lr:.dl 2012-2011e+ldl rt'l @ffi ; Ct r.€i3ll :qtltt'J'lt :g-r.,lldit 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 . اناأذج~~*****~~يااإ63 اءانوا***************يااإ14
- 17. r' --- al . 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 اناأذج~~*****~~يااإ63 اءانوا***************يااإ15
- 18. rt ,t 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 اناأذج~~*****~~يااإ63 اءانوا***************يااإ16
- 19. r 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 اناأذج~~*****~~يااإ63 اءانوا***************يااإ17
- 20. _rt .$I I 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 اناأذج~~*****~~يااإ63 اءانوا***************يااإ18
- 21. -: sFL.JlfsYt i-,,.-. jj'iS:tt ir-tilt 6rlrrtl3 6UiYt l-,Sl p."! Itpt:,. i*,Sl I ol.lgisrll i-t-pt u-gUill Otrlll -:U6.4i:ll -: #!tt'J'lt 2013 ' 2012 s'-lJJlpbll -: rgYJlP!;lt اناأذج~~*****~~يااإ63 اءانوا***************يااإ19
- 22. I t.'! .t", PHD examination... choose the right answer: I I:rnx dy:? a:-l ; b:0; c:l ; d:e , e:2e; f :3e 2- [ sinzX dx: ? q:|x - ]sin 2x + c L2 b):;stnsX*C; ,l-ixz +!sn3x + c 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 tt اناأذج~~*****~~يااإ63 اءانوا***************يااإ20
- 23. /, L: 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 اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ21
- 24. ..t 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 اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ22
- 25. r t heoritical maximm numb ero fp arts) X 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? اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ23
- 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- اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ24
- 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: اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ25
- 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 اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ26
- 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 اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ27
- 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. اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ28
- 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 اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ29
- 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 اناأذج~~*****~~يااإ63 a tt اءانوا***************يااإ30
- 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. اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ31
- 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 اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ32
- 35. -: sPl-'tJlf-'Yl i.s". JJri(ill it l+ll ilrlrrJl3 GEJ)I 4-,JiA f.,1 GUiyli*,tiA / ol:u+isrJl i*,t-1.rt s-,gtiill OL&yl -3LF.ai3ll -: €-w,llt'Jll 2013 ' 2012 s'-,lJJlptrJl -: €#I flJ'll اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ33
- 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 اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ34
- 37. t ar 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 اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ35
- 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 اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ36
- 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 اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ37
- 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. اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ38
- 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 اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ39
- 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 اناأذج~~*****~~يااإ63 tt اءانوا***************يااإ40
- 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. اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ41
- 44. .aI t.. 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 اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ42
- 45. ,tI ?. 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 اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ43
- 46. tt ?a 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) اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ44
- 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 اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ45
- 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. اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ46
- 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 اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ47
- 50. -: q;,etr.Jlf-'Yl 4FJJ'islll i'.t+r 6.ttr-rll3 6UiYl i-Sl p,.3 6tliYl i-r.il / Jild+t-rll i*,t-).rl u-gfj3ll OLrj.yl -;Ua..aiill -: rJ#llP=;lt 2013 - 2012 qr,-,lJJlpbll -: 6Y'!tP!..;rlt اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ48
- 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? اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ49
- 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; اناأذج~~*****~~يااإ63 p tt اءانوا***************يااإ50
- 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 اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ51
- 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 اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ52
- 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 اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ53
- 56. ' "*-,rqiF:rqe*{e!45:T}is.iqrfr:}-.i.: r:i*is5:*1;rr@ t a ' b- Periodica' c- interrupted اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ54
- 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 اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ55
- 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. اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ56
- 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 اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ57
- 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 ... . اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ58
- 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. اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ59
- 62. -: sPtJ.-,ll3Yl irr.. J'tJiSiJl ir-t+lt g.rtr.Jl3 GliiYl 4-,JiA p-i gn)lri:-,| i-,Sl I Ji./r. Ull i-,t-p .,-,ltjill gls:,r!l -:U6.aiill -: cr-|r],lldJll 2013 ' 2012 s/"lJilPbJl -: €-r.JldJll اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ60
- 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- اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ61
- 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. اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ62
- 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 اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ63
- 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 ...... اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ64
- 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. اناأذج~~*****~~يااإ63 i;p tt اءانوا***************يااإ65