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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What will be cross section area of copper conductor for carry 2000 amps & 2500 amps....sq.mm.?/

3 7226

why dose not transformer not rotate ?

3 5752

Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MVA, Areva make transformer. Why ?

7 11431

In transformer how measure the winding temperature ?

5 23892

What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????

1957

Why colled 440V to 3-phase supply.

2147

Why indicated only R.Y.B to phase.

Bhel,

6 11522

what happen when transformer connect on dc supply.

5 9718

What happen when increese more than 50HZ fequincy.

5 8625

what is the relation between currebt & voltage.

8 9586

Where burned of electricity,when,who, & why.

NIGP,

1984

what happen when increase or decrease size of lamp,light.glass.

1915

Why Two Transformers aside shoud be supperated by concreted wall?

5 15883

what is the difference between potential Transformers and capacitive voltage transfoemers and where it is used?

5 13464

Explain the experiment on ward leonard method of speed control of a dc shunt motor.

2 12209

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Un-Answered Questions { Electrical Engineering }

How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance

2013

how generator load test is conducted?what are the steps?

1596

Different types of relay fault which phase sequence??

908

any application of back emf

2122

what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

2273

i need previous entrence exam papers of nhpc.

2845

use of choke in APFC panels

5821

What is the formula for calculating the Instantaneous Short Circuit & overcurrent for any breaker

2009

I am inpecting a 10kVA UPS what tests should i do and should i observe?

2215

State magnitude criterion.

1116

is there any role of power factor with frequency variation? and how we can manage the frequency variation?

2059

What is acsr cable and where we use it?

1158

How the over load setting for HT Motors calculated-provided in Numerical Relay

1814

Control cables in S's will carry 1000v which is AC R DC? Pls answer me

2154

What is the formula for calculating impedance of transformers connected parallel at fault level 50KA?

2088

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