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 IS THE REASON,WE USED THREE CORE CABLE INSTEAD OF THREE SINGLE CORE CABLE.

2 4747

why we connect the capacitor bank in star , not in delta in any system

2 6552

what happen if we supply 220v dc suppy to the bulb or tube

2 5441

what is pulverisation

2 4446

what is AVR? what is the function of AVR?

2 5551

in railways why we use the power in 10,20 30kv,why not in the multiple of 11kv

2 4916

Is it possible to interlock between ACB & MCCB?

Areva,

2 10802

How i can calculate current of cable according to ares?

Pharma,

2000

inductive power factor is benefit compare to capacitive????

3 4805

how the harmonic pluses take place in the flow of current

2 4145

what is the consuption rating of motor in one day

1 3298

Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 5041

A 3 phase transformer's (Y-Y) Y and B phase is (Y and B connection not broken) broken from neutral and R and Nutral connection is ok, what will be the relay tripping and why

1967

how can we connect a distance relay to CT core that is for backup protection or metering?

1 4192

HOW CALCULATE MOTOR KW, IF MOTOR NAME PLATE MISSING, WE FIND ONLY MOTOR WINDING RESISTANCE ONLY

1 7446

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Un-Answered Questions { Electrical Engineering }

RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV is ok ,but haw to calculate the KA rating?

2089

working of diesel generator ?

1838

what work will do diffrential realay DG set

2894

Can an inverter be used as a converter? How?

1945

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

927

what is the use of permanent magnet generator in exciter

2165

explain the Trip supervision circuit

2152

Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?

1909

Vibromotor 252MV 1/4HP2P..what is mean by 252MV?

1962

low frequency protection why recomend?

2283

Is it advantages of having star-delta vfd than normal star vfd , if yes why?

2258

when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

1805

Define norton equivalent circuit?

1049

What is the range of the stator resistance of 3 phase induction motor?

1901

How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend

2076

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