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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

1. What is differential relay? How it operates?

3 6037

How to calculate the Short Circuit Impedance in Transformer?

3 7883

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

2038

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

2 6401

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

2006

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

2 7255

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

3 19202

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

1 4614

Why DC Currents are not used in transformer?

4 8070

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

2 4793

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

3 7038

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

2 4901

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

3 10560

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

3 7835

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

2 5555


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

what is meant by impedance & transient protection?

2107


Why Neutral Isolation is required?

2231


what is POTT and PUTT explain?

3349


how current is reverse from its normal direction during the fault?

2457


i have install 750 kva distribution transformer at my site and want to do neutral earthing. what calculations should i follow to determine earthing conductor material and size?

2060


what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.

5546


What is shunt voltage and u v voltage witch one best

1721


WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

2664


Is it a better option to procure screw type air compressor rather than reciprocating air compressor?If so, what is the reason?How should we select an air compressor(100 CFM)? Please mention the important parameters of air compressor.

1970


I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer

1933


What are approaches to tackle sedimentation problem of reservoir?

1022


How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540

1107


Briefly describe means used by electricity suppliers to influence the flow of active and reactive power in power networks (one for each type)?

1975


What is the difference between security constraint unit commitment and security constraint optimal power flow?

1710


How many types of protection relays are there based on the characteristic?

1087