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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why does spark appears when we swith on the light

 1 3763

what the main difference of the 3 phase and 2 phase power supply??

3 4785

what is isochronous mod? what is voltage drop mode and p.f mode?

ABB,

2599

what is ic 01,ic 06 ?is it types of cooling?

Bhel,

3761

In 110V DC supply,if a closed circuit gets open, How can we identify the voltage which is measured after the resistor(4KOhm) which is open with negative.it shows 55V +ve when measured, also the actual positive source is 55V +ve .Because there is no voltage drop in open circuit. How can we identify whether this is the voltage which is series with the resistor or the DC source direct +ve.

GE,

1 3624

what is tesla ?

 1 3191

what is at/cm ?

 3 4064

how to choose the cable size for 100A(is there any formula please update)

 6 12372

how can decide the current rating of oltc

 1847

why always out of the 3 phase(RYB) of supply, in Y phase w.r.t the voltage is higher? on R & B phase the voltage will be lower as compared to Y phase?

 1 5109

Installation method of self treated earth electrode.

 1461

speed of an electric wave

3 3508

HOW TO MEASSURED THE AMPS RATING FOR SUITABLE CABLE SIZE?

 4 5870

6.6 KV /.415KV Step down trf. we can get 6.6 KV from primary by applying .415 KV secondary side by same TRF.

Suzlon,

3 6541

how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

 1503

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Un-Answered Questions { Electrical Engineering }

what is the size of cable for 15kw motor and 85 meter cable length using with vfd

1946

What is the role of power pack in substation protection system?

2219

Why do power lines not short out when they fall into water?

1479

how to caculate cable size for diff types of loads? if anyone know the calculating procedure please tell me

952

how many joints are allowed in underground HT cable of 1 KM

1349




What is block diagram?

638

what kvrah y we need to take the readind of that

1550

How can we find the breaking capacity of a Load breaker switch (LBS) fed from 11 kv supply??ex:50KA, 26kA etc???detailed step vice answer pls.

1574

how to store the thunder power?

3742

Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?

1722

what is the difference between fault current ant short circuit current?

2241

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1710

is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

4117

Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards

1643

what is meant by power and distribution transformer ?

1500

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