Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

1. What is differential relay? How it operates?

3 6209

How to calculate the Short Circuit Impedance in Transformer?

3 8001

What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

2087

While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply?

2 6514

What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

2051

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

2 7369

Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

3 19352

. What should be the minimum and maximum ohmic value for earthing?

1 4703

Why DC Currents are not used in transformer?

4 8251

What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

2 4926

As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why?

3 7169

How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test?

2 4986

. Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV, 20kV, 30kV?

3 10694

Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?

3 8025

Explain why the Voltage drop will happen in 3 Phase line?

2 5684

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Un-Answered Questions { Electrical Engineering }

how do i commission a distribution transformer knowing all its ratings and transformation ratios?d

4677

What is the rating of circuit breaker needed for 300 KVA load in 33 KV supply line in a transformer of 33 KV / 415 Volt ?

1829

Define early construction of human being

1962

what is the relationship between phase & neutral

2641

can u tell me the promotion from oiller to enginer

1997

what is transformor oil gread

2590

An ELHNC 80amp 240v 30mA RCD is tripping periodically, every 30 - 180 seconds is it safe to disconnect the protection circuit?

2215

what is RFCT and Insulgard Relay & It's function?

2240

What is the formuala to calculate the rating of motor protection circuit breaker

2271

66kv under ground cable how to layaing in ground any special case two ckt r runing

2048

If we are given a 10 amp cable type and asked to calculate the number of cores used and the thickness of the cable, how do we do it?? please help...urgent!! i hope the question is clear enough!!

1893

why we r not earthed Control cable of C.T. terminals

2085

What is sink and source?

1261

What is the difference between diesel generator engine with and without turbo charger with the same capacity?

1749

can anyone send me some sample question regarding power grid corp

2255

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