Interview Questions Answers in Electrical Engineering

Question { Shrishti Power Technologies, 1768 }

Does VT metering core can be used for synchronizing.

Answer

Yes ,it is more accurate

Is This Answer Correct ?

0 Yes

0 No

Question { EPGL, 2890 }

How to power regulated by AVR in Alternator?

Answer

AVR maintains the set voltage , it does not regulate power.

Is This Answer Correct ?

0 Yes

0 No

Question { 7425 }

What is meant by pilot exciter and its working?

Answer

In short ,pilot exciter is for main exciter

Is This Answer Correct ?

4 Yes

3 No

Question { Essar, 1844 }

How Can Be Size Of Transformer Corelate With Freqvence?

Answer

Core size is directly proportional to the flux which is inversely proportional to frequency for the given voltage .

Is This Answer Correct ?

1 Yes

0 No

Question { IMD, 4304 }

How to check it good or bad capacitor

Answer

Do not give supply directly but through a bulb. It may be shorted or you may exceed the rated voltage . If the capacitor is good the brightness will be less and you can also test for stored energy

Is This Answer Correct ?

0 Yes

0 No

Question { Spec International, 2257 }

electricity bill multiplication factor 487.20xconsumption=total unit in kwh. what is 487.20 ?

Answer

22.5 is 4.5 % of 500

Is This Answer Correct ?

1 Yes

0 No

Question { Indian Railways, 2273 }

IDMT relay are mostly used for protection against..???
1)Earth Fault
2)Inter turn fault
3)Overloading
4)None of the above

Answer

3. IDMTL is a current relay and hence can be used for both over current and earth fault current . It is an over current relay.

Is This Answer Correct ?

3 Yes

0 No

Question { Shyam Group, 1934 }

what is the chemical reaction of solt and charcoal in earthing?

Answer

There is no chemical action , they are just good conductors

Is This Answer Correct ?

0 Yes

0 No

Question { 2651 }

In a dc series motor increases in lord current results in

Answer

As the speed inversely proportional to field current which increases due to increase in load, the speed should decrease

Is This Answer Correct ?

0 Yes

0 No

Question { Techno Electric and Engineering, 2403 }

What are applications of Shunt release?

Answer

It is provided in heavy duty LT breakers for protection against over currents / short circuits

Is This Answer Correct ?

0 Yes

0 No

Question { ISB, 3313 }

how i sync. the different size of generator.

Answer

Size , capacity do not matter ?

Is This Answer Correct ?

1 Yes

0 No

Question { DAR, 2858 }

As per is what is distance between two chemical type earth pit

Answer

6 mt

Is This Answer Correct ?

2 Yes

0 No

Question { 2462 }

Isolation transformer primary to sec turns ratio?

Answer

It is usually 1

Is This Answer Correct ?

2 Yes

0 No

Question { 4042 }

In my home i am getting too much electricity bill (more than 4000) but I am very much sure that we are not consuming that much. How i can check this ?

Answer

Lodge a complaint with the supplier ,you may have to pay the testing charges

Is This Answer Correct ?

1 Yes

0 No

Question { Electrical Inspectorate, 2174 }

What is the function of neutral CT in transformer? Turn ratio of typical CT for 2MVA transformer ? or relation between full load current of transformer and neutral CT ?

Answer

Neutral CT should be identical to line CT s for REFR

Is This Answer Correct ?

0 Yes

0 No

k.prakashchandra