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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

in 33kv/11kv stepdown t/f why should we use Star point

2 3435

When PRV operated at power transformer ,can anybody tell me particular pressure for 50mva transformer plzzz.

BWSSB,

1 2565

difference between local breaker backup relay or backup protection relay ?

1 2707

Does VT metering core can be used for synchronizing.

Shrishti Power Technologies,

1 2523

Please explain, how to test vector group of tranformer(Delta y1) . Thank

PGCB,

1669

how to test YNyn0 vector group in transformer?

3817

Master trip relay code no

TR,

2 3704

if reactive power become zero in transmission system then what effect on system.???

Sedemac,

3 5630

Why double earthing is required ?

1 3997

What is the meaning of dedicated earthing?

Dabur,

2096

The basis on which voltage selection of motor is done i.e. either HT or LT.

DAE,

1 3260

What is cogging and crawling phenomenon in motor.

DAE,

2 4310

I want to know that a 160kva diesel generator contains capacity of 160kva on each phase like R=160 Y=160 B=160 total RYB=480kva or it is total capacity of all there phases like RYB=160kva ... thanks in advance ...

jlpl, JP Saraswat Engineers,

2 3294

what is inverter and converter

Hindustan Syringes and Medical Devices,

1870

If age of Raju is 20% less than Sanju,then age of Sanju is how many % more than Raju

Tech Mahindra,

2 4369

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Un-Answered Questions { Electrical Engineering }

what happen when power factor of 2 parallely operated transformer become equle?

2177

ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

2042

how can we change the phase angle b/w two phase?

5070

how pt is using

1905

What are the advantages of autotransformer?

1175

how can i find cable size from current rating?

1727

state basic meaning of 'INDUSTIAL AUTOMATION'?

1866

control & auxilary circuits used for circuir breakers

1850

How to calculate the heat load for a electrical room

3037

I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

3771

how to select electronic timer(Star-Delta) setting for diff. rating motors

1918

what is meant by 2 within a star in a voltmeter dial?

2022

How to test the vector group of a Yd11 transformer? what are the relations to be checked between various vectors to confirm this vector group?

4424

What is meant by Low Resistance Cable and High Resistance Cable.

1873

What is difference between start imitation and start interlock for 3 phase motor protection ?

2218

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