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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

How we can calculate what type of supply we need for an example sometimes we take 11 KV and sometime 33KV from EB ?

4 6583

what type of current supply is given to house holds?

7 18419

What is a formula to decide the size of the cable of the star delta motor ( From Contactor to the motor 2 runs )

4 6210

How to decide the size of the capacitor for a single phase induction motor say 2 HP ??

2166

1.After synchronising the alternator to the grid,how we r delivering power to the grid?if the i/p increases does the speed hence frequency increases? 2.y the power factor is changing when exitation changes?what is the relation with p.f and flux?

BSNL,

4 10579

WHAT WILL HAPPEN WHEN THE MOTOR FREQUENCY INCREASED OVER THE RATED MOTOR RPM THROUGH DRIVE?

3 6967

how many stairs have you climbed while you were coming

Bhel, SSB,

2147

what is the voltage of insulation megger that should be used for measuring the resitance of 66kv equipments.

DEWA,

3 9223

for a 33/11kv transformer, after step down what happens to the balance 22kv.

2 5226

what is full form of google

IBM,

5 9838

Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

1839

what are the available sizes of pin type terminal lugs in the market today?

1802

what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?

DEWA,

1925

Why not instal the NGR in 11kv/433kv trasformer?

3 5832

How to calulate the NGR resistance ?

L&T,

1 4832

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Un-Answered Questions { Electrical Engineering }

What is the use of lag compensator?

1185

Installation method of self treated earth electrode.

1993

we have 3 single phase transformers. how will we generate 6 supply from 3 phase supply input

2073

can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...

1947

how to calculate singlephase motor efficiency?

2193

WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

6273

What is the operating principle of turbo-generator.

2278

why high speed tripping relay is used in protection circuit why not normal relay

1400

Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?

2098

If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?

2179

What is the difference between the transmission line and distribution line?

1130

Define ohm’s law for a.c (alternating current)?

1015

what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?

3996

How do we calculate the resistance per metre of single core aluminium stranded cable 19*3.25mm sheathed in pvc,at 15 deg C temperature?

2361

Describe Non I.S. Earth System and why is it used?

1745

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