Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the function of the serge absorber?

5 14555

What is a unit of gravity (Battery)

9 13148

what is the difference between surge arrestor and lightning arrestor ?

6 15004




what is the difference between scaler and vector control in drive and where it is to be used ?

TCS, Essar,

1 10450

What is the fuction of UV & how it works in circut breakers? is it one type of relay?

4 7187

In which working principal temperature transmitter work.explain in detailed.

1038

What is Harmonics & what are its efect & which harmonic is dangerous

IBM,

5 10642

How to find out kvar from any particular load capacity give a formula

3 4085




what are the units of cable insulation?

3 3212

What is the purpose of starter and choke in tube light?

TATA, TSPL, Chimay Brewery,

9 96437

will a bulb glow connected to two phases of a delta connection?

6 5191

Why use the VCB at High Transmission System ? Why can't use ACB? Pls explain the ans.

DLF, amps,

5 13976

what we happen if 400 kvar cpacitor banks are on in manual mode and there is no load on mains ??????????????

HCL, Reliance,

7 5016

how to calculate cable size by amp

CDS,

19 41785

what is electric traction?

TCS, Volvo,

26 73362


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Un-Answered Questions { Electrical Engineering }

How to test Alternator stability test for REF relay

159


What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?

899


how to remover corona effect and hysteresis losses from contactor

814


What is CVT and what is relation with wave trap?

818


what is booster? and how it is connected in a circuit?

1290






we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

905


Why to keep capacitor bank off while generator running.

459


why we use ac supply as 415 volts instead of 415 v why we cant apply 230 v for dc

978


what is difference between line differential and transformer differential?

441


why we used dc supply for field in dg set

1041


Both generator parallel condition shared load equally but one genrator taking ampere more than the other what are all the causes to make like this

453


where rlc series ckt used?

855


3Cx240 & 3Cx300 sqmm Al. cable from lv side. What is the calculation for this cable??

78


Comparision of Air break circuit breaker, SF6 Circuit breaker and vacuum circuit breaker.

1149


will 1050kva DG set withstand for back charge of 16MVA transformer

639