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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why is a thicker conductor necessary to carry a current in A.C.as compared to D.C. ?

1 4793

Then what do you call a transformer that is installed on the ground?"

1 4176

why does connected a indutor with mnsformeretering core of current transformer ?

2102

how to set the transformer differential relay

Divis Laboratories,

1 6584

in 132 kv substation ligtning arrestor(120 kv) connected to line. but line voltage comes to 132 kv, it operate or not???

Divis Laboratories,

4 16632

voltage of a ckt is measured by volt meter having an input impedence camparable with the out put impedance of the ckt Eror caused is 1. Gross Error 2. Errors due to lloading effect

GATE,

2 4167

when the control mechanism is present for an ammeter(1-10A) and 1A current is apllied what will be the reading of the meter?

GATE,

2 4501

Relay setting for earth fault of reciprocating and centrifugal compressor motor feeder.Setting will be different or same?

Reliance,

1 3986

what is cathodic protaction?

1956

The error in a single phase energy meter where pressure coil lags behind applied voltage by 88 degrees and pf is 1) upf 2).5lag

GATE,

1 4607

why we use 20 KV, 10KA LA on 22 KV Line

2 6869

WHY TRANSFORMER RATING IS MENTIONED IN KVA RATHER THAN KW

5 9798

HOW SKIN EFFECT REDUCE THE CROSS SECTION OF THE CONDUCTOR

2 5569

What is eddy current & eddy current loss ?

2 7375

how to avoid Saturation in C.T?

2070

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Un-Answered Questions { Electrical Engineering }

WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

2244

In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??

2041

write down the formula of cable size in RM if current is 50Amp.

1302

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

1669

What kinds of decision are made about CT from it's Knee point(voltage & current)?

4990

How many sprinklers should be in one pipe line?

1917

how to determine motor size for a fan application?

2240

What is the difference between alternator and generator?

1260

It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

3821

how can i change the rotation of the AC single phase induction motor and show me by diagram

1754

what is relation between ct and pt ratio with multiplication factor of a energy meter? is there any other factor on which multification factor depend?

2290

Meaning of ingrace protection for motor.for ex IPXY

2864

How could a garment factory benefit from renewable energy

2723

why we use single core 630mm2 cable for transformer secondary side

877

What is the unit audit? if our Max demand is something and we found much more unit then how to improve our max demand?

1914

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