C. Surge problem. One should spend 1 hour daily for 2-3 months to learn and assimilate Power Systems comprehensively. Underground system is more flexible than overhead system. POWER SYSTEM PROTECTION QUESTION AND ANSWER Q:What are the functions of protective relays. At transient power flow, the difference between voltage angles is small, beyond which the system becomes instable. 2. b) The saturation voltage V CE for germanium transistor is more than silicon transistor. What are the functions of protective relays? GATE 2019 EE syllabus contains Engineering mathematics, Electric Circuits and Fields, Signals and Systems, Electrical Machines, Power Systems, Control Systems, Electrical and Electronic Measurements, Analog and Digital Electronics, Power Electronics and Drives, General Aptitude. Answer: It is an electrical device designed to initiate the isolation of a part of the electrical installation, or to operate an alarm signal, in the event of abnormal condition or a fault. Stability: The power flow from one end of the line to other end depends upon the line reactance, difference between voltage angles and magnitudes of voltages. An over excited synchronous motor running on no load is known as synchronous condenser. It is used to improve the power factor of the system. The cosine of angle between voltage and the current in an AC circuit is known as power factor. Higher charging current. [2] I) Design The Numerical Distance Relay For The Protection Of Short And Medium Distance Transmission Lines. EE2402 PROTECTION AND SWITCHGEAR SHORT QUESTIONS AND ANSWERS UNIT I INTRODUCTION 1. Our 1000+ Power Systems questions and answers focuses on all areas of Power Systems subject covering 100+ topics in Power Systems. What is meant by synchronous condenser? 2. a) The saturation voltage V CF of silicon transistor is more than germanium transistor. Multiple Choice Question (MCQ) of Electronics page-17:241. Define Power Factor. D. High initial cost. c) The saturation voltage V CE for silicon transistor is same as that for germanium. I) Distinguish The Modem Power System Protection With The Conventional System Protection. These topics are chosen from a collection of most authoritative and best reference books on Power Systems. To detect the fault and initiate the operation of the circuit breaker to isolate the defective element from the rest of the system, thereby protecting the system from damages consequent to the fault. Switchgear and Protection - Electrical Engineering (MCQ) questions and answers Home >> Category >> Electrical Engineering (MCQ) questions and answers >> Switchgear and Protection 1) In a circuit breaker the contact space is ionised by what? Q.5 The main drawback of ovehead system over underground syste is-A. Question: Q23. B. We have also provided number of questions asked since 2007 and average weightage for each subject. To detect the fault and initiate the operation of the circuit breaker to isolate the defective element from the rest of the system, thereby protecting the system from damages consequent to the fault. Ans: C. Q.6 By increasing the transmission voltage to double of its original value the same power can be dispatched keeping the line loss-A. In a single bus-bar system there will be complete shut down when (a) fault occurs on the bus itself (b) fault occurs on neutral line (c) two or more faults occur simultaneously (d) fault occurs with respect to earthing Ans: a. SWITCHGEAR & PROTECTION Questions and Answers Pdf Download 110. Which of the following statement is true? Power System Protection and Relaying:Question and Answers What is protective relay? POWER SYSTEM LAB VIVA Questions :-1. Known as synchronous condenser Power system Protection QUESTION and ANSWER Q: What are The functions of protective relays ). 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