Electrical Engineering Interview Questions

What is the avergae difference between OTI and WTI for EHV Power transformer?

31709

what is the natural resistance of the earth? and how it effected by rain r snow? wat is the natural resistance of wet soil? define natural resistance?

ECL, ISRO,

6774

is high voltage or high current is danger

L&T,

18807

we all know that both the generator and motor are electromechanical conversion devices.....then why we rate motor in kw and generator in kva????

KSEB,

6306

where would be tap changer in transformer & why?

3609

What is the diff. between single compression and double compression gland

ASL,

1532

what is the importance of fault level in power system and how is it decided

9787

What is annunciator ?

3391

why are you use the crgo core lamination in transformer

7816

IN 6.6KV 3 phase switch gear .i will give 6.6kv to R phase only to earth in during H.v testing (through H.v KIT).what happen remaining phases.how much voltage get remaining phases.why? explain.

4601

sir i am pradeep singh from electrical branch and i want to place in software industry(tcs)but i dont know much about programmig languages like c c++.so how can i get a placement in software industry?

TCS,

3401

Dear friends I want to design busbar for1600 kva transformer(i.e2100 amps) what are all the factors to be considered before selectinga busbar what are all the standard sizes of busbars what is the formula for finding current of copper and aluminium busbar

1488

4366

how the fan is switched off immediately switching off the switch?

3241

friends., why celling fan rotate cockwise direction and wall fan anticickwise direction ?

5506

Un-Answered Questions { Electrical Engineering }

I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

1420

wat is meant by PX class in ct?

1579

what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW

8046

IN electrical field, WHAT ALL THINGS THE CUSTOMER WILL ASK WHILE ORDERING FOR LT PANEL (ALL TYPES OF LOW TENSION PANEL)

1637

what is the purpose of shading ring or shading coil in electrical equipments.

3967

how to make an earthing certificate

1770

What Should be the value of Vector Surge angle at Tripping and how to calculate it?

1596

What is thresh hold value of current?

1607

electrical knowelge

746

what is the ATS .And how it works.

1060

What is the power requirement of tamil nadu for one month?

1566

when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil

1276

Testing procedure of DG alternator stability test

949

I want to know Electrical Circuit?

1715

describe the Tranformer testing procedure

1470