power system protection questions and answers page contents

2. Which of the following statement is true? 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 Our 1000+ Power Systems questions and answers focuses on all areas of Power Systems subject covering 100+ topics in Power Systems. C. Surge problem. 110. Higher charging current. 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. 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. We have also provided number of questions asked since 2007 and average weightage for each subject. 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. B. 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. POWER SYSTEM PROTECTION QUESTION AND ANSWER Q:What are the functions of protective relays. POWER SYSTEM LAB VIVA Questions :-1. 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? Underground system is more flexible than overhead system. Q.5 The main drawback of ovehead system over underground syste is-A. Multiple Choice Question (MCQ) of Electronics page-17:241. b) The saturation voltage V CE for germanium transistor is more than silicon transistor. 2. D. High initial cost. I) Distinguish The Modem Power System Protection With The Conventional System Protection. 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. a) The saturation voltage V CF of silicon transistor is more than germanium transistor. What are the functions of protective relays? An over excited synchronous motor running on no load is known as synchronous condenser. c) The saturation voltage V CE for silicon transistor is same as that for germanium. It is used to improve the power factor of the system. What is meant by synchronous condenser? The cosine of angle between voltage and the current in an AC circuit is known as power factor. Define Power Factor. [2] I) Design The Numerical Distance Relay For The Protection Of Short And Medium Distance Transmission Lines. Question: Q23. EE2402 PROTECTION AND SWITCHGEAR SHORT QUESTIONS AND ANSWERS UNIT I INTRODUCTION 1. 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. One should spend 1 hour daily for 2-3 months to learn and assimilate Power Systems comprehensively. Power System Protection and Relaying:Question and Answers What is protective relay? These topics are chosen from a collection of most authoritative and best reference books on Power Systems. At transient power flow, the difference between voltage angles is small, beyond which the system becomes instable. Of Power Systems The difference between voltage angles is small, beyond which The system instable. 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