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This document contains exam instructions and questions for an Electric Machines II exam. It specifies that question 1 is compulsory and students must attempt 4 additional questions. Question 1 asks students to briefly define 7 terms related to electric machines. The remaining questions ask students to differentiate between open and short circuit tests, discuss reluctance motors and auto transformers with examples, explain synchronous motor characteristics and applications and torque-slip characteristics, discuss voltage regulation importance, and write short notes on two types of motors from a list.
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Corona occurs when the voltage applied across conductors exceeds a critical disruptive voltage. This causes a faint violet glow and produces ozone, power loss, and radio interference. Corona is caused by ionization of air between conductors due to electrons gaining velocity under the influence of the electric field and colliding with air molecules. Factors that affect corona include conductor size and spacing, line voltage, and atmosphere. While corona reduces transient effects and increases conductor diameter, it also causes energy loss and can lead to corrosion. Methods to reduce corona include increasing conductor size and spacing.
Corona topic
Corona occurs when the potential gradient between two conductors exceeds a critical value, causing a faint violet glow. It is accompanied by a hissing sound, ozone production, and power loss. Corona results from ionization of air molecules caused by free electrons accelerated by the potential gradient, and is affected by factors like conductor size/spacing, line voltage, and atmosphere. Larger conductors and greater spacing reduce corona by lowering the surface potential gradient. Critical disruptive voltage is the minimum voltage for corona to occur, calculated based on conductor size and spacing. Visual critical voltage is the minimum for visible corona glow along the entire line.
Armature reaction
This document discusses armature reaction in DC generators and motors. It explains that armature reaction is caused by the magnetic field produced by current flowing through the armature windings, which distorts the main magnetic field produced by the poles. This shifts the magnetically neutral axis and causes brush shift. Compensating windings and interpoles are used to counteract the cross-magnetizing effect of armature reaction and make commutation sparkless. Compensating windings carry current in the opposite direction of the armature below the poles, while interpoles have the same polarity as the leading pole and induce a reversing e.m.f. to help current reversal during commutation.
Inductance and capacitance
This document discusses the key parameters - resistance, inductance, and capacitance - of overhead transmission lines.
It first defines each parameter and explains that they are uniformly distributed along the line. Resistance is opposition to current flow, inductance is flux linkages per ampere, and capacitance is charge per voltage.
It then goes on to provide formulas for calculating the resistance, inductance, and capacitance of different types of transmission lines. It also discusses factors like skin effect that impact the resistance and analyses methods for determining flux linkages to calculate inductance.
Https _www.suit.edu.pk_uploads_past_papers_power_transmission_distribution_-...
This document contains a note for an exam on power transmission and distribution. It lists 7 compulsory questions covering topics like distribution systems, power factor, cable insulation, transmission line regulation and faults. It also provides 6 other questions on transmission line modeling, efficiency calculations, disruptive critical voltage, string efficiency, sag calculation, skin effect and short notes on HVAC vs HVDC systems, high transmission voltages, and corona. The exam is worth 70 marks total and students must answer question 1 and 4 other questions of their choosing. Electronic devices are prohibited during the exam.
Https _www.suit.edu.pk_uploads_past_papers_power_transmission_distribution_-...
This document contains questions for an exam on power transmission and distribution. It includes questions that cover topics such as:
- Secondary transmission systems using 3-phase AC wires
- The effects of sag on overhead transmission line tension
- Types of damage to insulators from breakdowns
- Models for analyzing medium transmission lines, including the T-model and Pi-model
- Factors that affect corona in overhead transmission lines such as conductor spacing and surface irregularities
- Methods for improving the efficiency of insulator strings in transmission systems
- Calculating the sag of an overhead transmission line given properties of the conductor and ice coating
Https _www.suit.edu.pk_uploads_past_papers_power_transmission_distribution_-...
This document contains an exam for a Power Transmission & Distribution course. It lists 7 questions, with the first question being compulsory and students to attempt 4 others. Question 1 has multiple parts asking about primary transmission systems, effects of conductor spacing and length on transmission lines. Other questions ask about insulators, Ferranti effects, calculating critical disruptive voltages and power losses for a transmission line, transmission line constants, and sag in conductors. The document provides context that it is for an exam in Fall 2016 and provides instructions not to use phones or electronics during the exam.
Https _www.suit.edu.pk_uploads_past_papers_electromagnetic_field_theory_-_ee315
This document contains 7 questions for an electromagnetic field theory exam. The questions cover topics like dot and cross products, Coulomb's law, vector operators, forces between point charges, Biot-Savart law, Kirchhoff's voltage law, electromotive force, Stokes theorem, and magnetic fields. Students are instructed to attempt any 5 questions out of the 7 provided. The exam allows 3 hours and is worth a total of 70 marks for the final spring semester.
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Https _www.suit.edu.pk_uploads_past_papers_power_transmission_distribution_-...
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Https _www.suit.edu.pk_uploads_past_papers_power_transmission_distribution_-...
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Https _www.suit.edu.pk_uploads_past_papers_electromagnetic_field_theory_-_ee315
Https _www.suit.edu.pk_uploads_past_papers_electromagnetic_field_theory_-_ee315
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The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
学校原版美国波士顿大学毕业证学历学位证书原版一模一样
原版一模一样【微信：741003700 】【美国波士顿大学毕业证学历学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
artificial intelligence and data science contents.pptx
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Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
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哪里办理(csu毕业证书)查尔斯特大学毕业证硕士学历原版一模一样
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本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
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留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Data Driven Maintenance | UReason Webinar
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样
原件一模一样【微信：bwp0011】《(Humboldt毕业证书)柏林大学毕业证学位证》【微信：bwp0011】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问微bwp0011
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三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微bwp0011】
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◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Null Bangalore | Pentesters Approach to AWS IAM
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Software Engineering and Project Management - Introduction, Modeling Concepts...
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
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Https _www.suit.edu.pk_uploads_past_papers_electric_machines_-_ii_-_elc315
- 1. Roll No.__________________ Engr. MuhammadFaisal Khan Electric Machines- II- ELC315-Fall - 2016 Page 1 of 1 NOTE: Question #1 is compulsory. Attempt four questions from the rest. All questions carry equal marks. Mobile phones and other electronic gadgets are not allowed. Q1. Briefly define each of the following. a. Horse Power b. Torque c. Machine d. Transformer e. Motor f. Impedance g. Electric Power Q2. Differentiate between Open and Short Circuit Tests. Q3. What are reluctance motors? Discuss it with detail. Q4. Explain auto transformers with an example. Q5. Discuss the characteristics and applications of Synchronous motors. Q6. What is slip? Discuss torque-slip characteristics in detail. Q7. Why voltage regulation is important? Explain in detail. Q8. Write short Notes on any TWO. a. Stepper Motor b. Hysteresis Motor c. Alternators Paper : Electric Machines - II - ELC315 Time Allowed: 3 hours Examination: Final, Fall - 2016 Total Marks: 70, Passing Marks (35) Sarhad University, Peshawar (Distance Education)