Electrical Engineering Interview Questions
Questions Answers Views Company eMail

when a cunductor is being disconnected from live cct, still it showing charged, if its checked by line tester?


8 4246

WHY CFL can't made in shape of bulb.

5 5391

why three phase system is not preferred in aircrafts power cckts if yes than explain reasons?

3 3071

wat is the role of reactive power in power generation?why we have maintain it.

3 7091

wat is the importance of reactive power in power generation.....if it is zero means wat will happen to system........

Bhel, Jindal,

22 27157

what is difference between differential protection and distance protection and how we calculate the sloop?

OPS, Power Grid,

5 31617

what is slip resistance? how much its value in 110 kw motor? why voltage is varied in vvvf drive ?


1 2502

What type of protective system we uses in L.V. distribution panels?

6 4769

Why P.f. of the system decreases when it is connectect across induction motor? & how to maintain the p.f. of system to unity.?


6 5464

What do you mean by S.F.U. unit? application of it.

Indo Asian,

16 78726

what is green house effect?

4 3053

what do u mean by knee point voltage?


7 10235

what is negative,positive abd zero sequence current explain clearly


1 6364

what happens when ac supply is given to D.C motor.

17 20622

what is purpose of using reactor in substations.

Heavy Engineering Corporation Ltd HECL,

20 87702

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Un-Answered Questions { Electrical Engineering }

How 3 phase invertor works?


Where can I get CPWD electrical specifications & Shedule of rates? Please help me


what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?


how i chosse capacitor bank if my energy meter is 48 kvr? tell me capacitor bank chossen formula?


In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???


can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?


what is the grounding Calculation formula? spouse i want to provide grounding to 3phase 18kw motor or i want to provide ground to 3phase 10kva dry type transformere or you give me any exemple...... Thanks.


What is difference between start imitation and start interlock for 3 phase motor protection ?


pls tell me about ups internal connection & we have given only 3 phase supply to ups system how get 4 wire (R Y B N )


Brief me about maintenance planning & sheduling of machine tool.


Draw the DOL starter and star delta starter drawing?


How to calculate VCB rating for 33KV ,25 MW Power line?


Do u know any one? how to find out in motor rated amps? formula?


i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester


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