The power system consists of a three-stage network – generation, distribution, and transmission. Advertisements. Air blast circuit breakers for 400 kV power system are designed to operate in (a) 100 microsecond (b) 50 millisecond (c) 0.5 sec (d) 0.1 sec Ans: b. either by direct strokes on the equipment or by the strokes on the transmission lines that reach the equipment as travelling waves. 83. Electro-magnetic attraction and electro-magnetic induction. Each year, ENR ranks the top 500 design firms in the United States based on annual revenues. You could mention: punctuality, work ethic, team-working skills, interpersonal skills. Name the latest computer processors? Home » Power System Protection and Relays Questions & Answers. Low power factor means losses will be more.it is the ratio of true power to apparent power. How can you relate power engineering with electrical engineering? Differential protection is based on the fact that any fault within an electrical equipment would cause the current entering it, to be different, from that leaving it. Great Manager Awards. d. … I A 75 A I B 0 A I 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. Electrical Engineering interview questions and answers: Part 1 Part 2 Part 3 Part 4 Part 5 Part 6. power systems relay questions; power system protection question and answers pdf; protective relay and circuit breaker interview question; protective relay isolation; POWER SYSTEM PROTECTION QUESTION AND ANSWER PDF; what is torque control in protective relay; Share on. Ring main feeder system. In India, industry uses 415 Volts 3 phase AC power at 50 Hz. 1. [2] How to provide Over current protection in a power supply? Next Article Transformers Questions … 13 interview questions that can decide your future. Single end fed system of parallel feeders 3. 1) What is / are the main disadvantage of using oil as the quenching medium in the circuit breakers? Power Systems (Switchgear & Protection) Expected MCQ PDF 1 For Coal India Limited (CIL) MT Exam 2017 . A. Hive Interview Questions ; Datastage Interview Questions; Oracle Warehouse Builder Interview Questions; Tableau Interview Questions; Apache Storm Interview Questions; Business Intelligence :- More Interview Quetions; Support. Ans : In the power system sometimes a very temporary nature of fault persists for a short period of 2 or 3 seconds and after which the fault is automatically cleared. Ans. Q2) What is Cryptography? online ups having high volt and amp for long time backup with with high dc voltage.but ups start with 12v dc with 7 amp. Open Up India. 4. In a computing text, it is referred to as protection against unauthorized access. Describe the skills and competencies that make you a perfect fit for the role, advises Kim Whitfield, head of resourcing at M&S. ups is also two types : on line and offline . State the difference between generator and alternator 3. What Are The Main Equipments And Accessories Used For Substation? Electrical Engineering Interview Questions ; Question 25. ET Prime Women Leadership Awards. In this topic you will find the most common Questions and the Model Answers that you may expose to in your Interview for a Planning Engineer Position. ETRise Top MSMEs. These questions are basics and any candidate should possess basic knowledge of these aspects. In this post provide you latest and updated 2018 Electrical MCQ Objective Questions with answer which are help for preparation all electrical engineering exams like GATE, IES, JTO, PSUs, RRB JE/AEN, RRB loco pilot and technicians, SSC JE, DMRC, LMRC, ISRO and other state level engineering exams. Power transformers generally operate at nearly full – load. SECTIONS. point A in this case. By . Electrical Power System Interview Questions ; Question 16. Answer: Eletro-mechanical relays operate by two principles. Using Fuse we can protect the power supply against over current. The lightning surges may cause serious damage to the expensive equipments in the power system (e.g. Next Page . I was interviewed by two persons. Explore the latest questions and answers in Power System Planning, and find Power System Planning experts. Electrical Safety - Power System . BPO & … Highly-cited researchers. We have to … Varuni Khosla & Brinda Dasgupta, ET Bureau Last Updated: Jun 11, 2016, 05:00 PM IST. Previous Page. 2. Building “A” is supplied with 120/240 volt single-phase power from building “B” on the same property. Double end fed power system 2. Answer : The substation, which is created for temporary requirements of mainly construction purposes, is called mobile substation. Cybersecurity refers to the protection of internet-connected systems such as software, hardware, electronic data, etc., from cyber attacks. 84. It has to be ideally … Figure shows a single line diagram of a radial system for a DC distribution where a feeder OC supplies a distributor AB at a point A. What is a System? To know the answer in detail, click on the link given in the answer. Harikesh Yadav March 10, 2017 EE MCQ PDF, General. a. This interview question for technical support tests your knowledge and if you updated with the latest technological trends. An example of a Power System is the Electrical Grid that provides power to homes and industry within an extended area. What is protective relay? Learn what a Power System is, and the basics of Electrical Power Systems. Again, assume that the A phase cur- rent is at 0°. A power transformer usually has one primary and one secondary, and one input and output. 13 interview questions that can decide your future. “B” is supplied from a three-wire with two ungrounded conductors and one neutral without any metallic water pipe or other metal equipment connections to the building or equipment ground fault protection installed. What Is Called Mobile Substation? Answer: When the fault occurs relay operates and close the trip coils and circuit breaker operates and open the contacts subsequently and fault is cleared. I was asked a number of questions from more basics such as frequency of electricity network in the UK to more daunting like loosing a big generation in the network and the available time to act (with regard to system's inertia). Quenching medium in the circuit has an a phase to ground fault on the equipment or by the on. Transmission and distribution, and the closure of the load with answers under the like! 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