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Electrical Engineering Interview Questions
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Does RCCB do the job of MCB? Lets take 16A RCCB. it trips when residual current exceeds 30mA. does it trip in an over current situation, i.e when current exceeds 16A ??

 2 6417

In 3phase power= Root*3*v*i*cos@ What is the power in 2phase....??? and Derive it

Essar,

3 9701

What is the difference between KV,KVAR,KVA,KW?

L&T, PowerHouse, YUI,

6 57919

how to calculate voltage drop in long distance cable? for an e.g lamp of 12 volt ac ,300watt is 90 meter away from supply i.e (x'mer 230 v / 12v)and i m getting 8 volts at lamp terminal ....

 1 4035

how you can select circuit breaker for 2000kva transformer?

TATA,

9 22162

What are the applications that use Solid State Drives in your home?

L&T,

1 5568

In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?

 1982

what is the function of generator exciter

NTPC,

11 66451

One of the advantages of HRC fuse links is that they can be used to back up equipment with an inadequate rupture rating. briefly discuss what this means

 1 5398

What is meant by the KA-rating of a circuit breaker? In this regard, discuss the stresses experienced by the circuit breakers

 3 13387

WHAT IS THE DIFFERENCE BETWEEN KW AND KVA ?

 10 32554

In Battery Charger - What is the meaning of End Cell Voltage and Float Voltage.

FLSmidth, Focus, PSEB,

9 41016

How to Calculate the maximum Demand required for a connected load for a manufacturing Plant

 6 80525

How to design harmonic filter at the project stage without nowing the harmonics levels

 1979

How to connect a Restricted earth fault relay for 2000KVA,11/0.433 KV Distribution Transformer and What is the neutral CT ratio should be selelcted for 2000 MVA Transformer for estabilishing the Restricted earth fault relay

 1 3725

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Un-Answered Questions { Electrical Engineering }

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

2006

how many stairs have you climbed while you were coming

1920

What is the function of Governor in Hydro Power Station? What is the Function of Lightning Arrestor Voltage Transformer (LAVT)?

2553

IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8

3581

Why the standard of ambient teperature mentioned as 40 degree celcius in machines.

1634

how are reversing the direction of dc motor

1366

is ac supply can store

1772

1.what is mean by 8/20 micro sec waveshape

1973

What are the types of windings according to the construction?

804

what is meant by carrier aided trip protection in transmission line

3553

What is error of a measurement?

888

why u r living from presentaly working.

2222

HOE WE CAN IMPROOVE BY USE OF CAPACITOR

1697

Draw a SLD of HT distribution EB grid up to users Transformer?

5917

WHAT IS MEANING OF Gg & Gg IN hrc FUSE

3018

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