Kuwait Society Of Engineers 2018 Fundamentals of Electrical Circuits: - Circuit variables and elements - Circuit laws and simple resistive circuits - Inductance and Capacitance - … 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. 3 Electrical machines and Power Systems 8 or 9 questions 4 Electronics 8 or 9 questions 5 Fundamentals of Communication 8 or 9 questions 6 Control System Fundamentals 8 or 9 questions Total 50 questions. You could mention: punctuality, work ethic, team-working skills, interpersonal skills. “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. Open Up India. 1) What is / are the main disadvantage of using oil as the quenching medium in the circuit breakers? How to answer. 13. This is starting question and the interviewer will go in depth in each section. BPO & … The power system consists of a three-stage network – generation, distribution, and transmission. Next Page . The radial system is employed only when power generated at low voltage and substation is located at the center of the load. 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? 83. Again, assume that the A phase cur- rent is at 0°. Power transformers generally operate at nearly full – load. 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. Electro-magnetic attraction and electro-magnetic induction. Therefore, breaker should be able to carry high current safely for some for some specified period during running i.e. Planning Engineer team reviewed questions and answers to remove duplicated ones, added more explanations and graphs to the answers, and produce the final product in a good shape. Let’s start. ETRise Top MSMEs. Electrical Engineering Interview Questions ; Question 25. This is most general interview question related to power supply. Home » Power System Protection and Relays Questions & Answers. 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. Frequently asked interview questions with answers under the subjects like electrical machines,Transmission and distribution,Power electronics and some general basic questions. An example of a Power System is the Electrical Grid that provides power to homes and industry within an extended area. [2] How to provide Over current protection in a power supply? Switchgear protection plays a vital role in modern power system network, right from generation through transmission to distribution end. Electrical Power System Interview Questions ; Question 24. This interview question for technical support tests your knowledge and if you updated with the latest technological trends. Obviously the distributor is fed at one end only i.e. Questions (27) ... Power System Protection. 1.Why star delta starter is preferred with induction motor? POWER-SYSTEM PROTECTION 15.3 2. ups is also two types : on line and offline . Answer: Relay time is the interval between the occurrence of the fault and the closure of the relay contacts is called relay time. Find the phase and residual relay currents. 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. Next Article Transformers Questions … Q. Each year, ENR ranks the top 500 design firms in the United States based on annual revenues. 84. Ans. Great Manager Awards. generators, transformers etc.) By . Business News › Jobs › 13 interview questions that can decide your future. 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). d. … Describe the skills and competencies that make you a perfect fit for the role, advises Kim Whitfield, head of resourcing at M&S. SECTIONS. A. Why AC systems are preferred over DC systems? 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. As with all challenging interview questions, an employer will observe your voice and body language, since they’ll indicate how well you cope under pressure. I A 75 A I B 0 A I 4. 5. This year, POWER was named the number 3 firm in the power … How can you relate power engineering with electrical engineering? Electrical Engineering Objective Questions MCQ with Answer Free Pdf Download. Explain differential protection? Ring main feeder system. Learn what a Power System is, and the basics of Electrical Power Systems. In a computing text, it is referred to as protection against unauthorized access. State the difference between generator and alternator 3. means according to ups VA it gives backup. What is a System? Power System Protection and Relays Questions & Answers . Name the latest computer processors? Answer: Eletro-mechanical relays operate by two principles. 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. What Are The Main Equipments And Accessories Used For Substation? Need periodical replacement. 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. Q2) What is Cryptography? Device drivers are also a piece of software that considered mandatory to run the hardware components in the system. What are different types of principles of operation of electro-mechaical relays? Low power factor means losses will be more.it is the ratio of true power to apparent power. A distribution transformer may have one primary and one divided or “Tapped” secondary, or two or more secondaries. Advertisements. 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