Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

difference between ac motor and dc motor

5 20298

why aggregate is placed all around substation ground.

9 15486

whats is MARX CIRCUIT?

1 10470

What are the earth resistance Standards of 66kv sub stations according to indian norms.

2 4508

what will happen when a bulb s connected btwn two phases of a three phase delta connected source?

6 9890

why ac supply neutral should earth not in dc (-)

2 6845

Which Kind of machines(in terms of poles) give the smoothest DC

2037

Which type of gas used in cylinder (VCB)?????

ICSA,

15 25317

If I want to use capacitor banks at HT (11 KV) side for maintaining power factor then which type of capacitor should I use? Plz give me the specification?? (I am using 1250 Kva transformer (11 KV/433V)).

2 10798

how to calculate lux level in out door (yard lighting) please expalin with a example

IVRCL,

1 6164

What is the major difference between cnc and plc. why cant we use plc instead of cnc

5 38757

What is difference between ball screw and lead screw.

2 9630

selection of conductor in different voltage?

TATA,

1 3618

What is the most accurate way of testing ELCB?ELCB is better than RCD?

GECO,

3394

what is MFD value in capacitor?I have 201 Kva load & reactive power is 150 Kvar. so how it is calculated?

IIT,

2 9542

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Un-Answered Questions { Electrical Engineering }

What are the significant parts of dc generator?

1215

what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks

1961

WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

2749

while doing high potential for 11KV 3 core cable how much leakage current will obtain?, what will be acceptance value?

2959

How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.

5451

TCS IS IT COMPANY THEN WHY DO THEY NEED ELECTRICAL &ELECTRONICS ENGINEERS?

2003

in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

2003

What is a commutator?

1122

working principles of cf lamp,incandescentlamp and f lamp?

2322

can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?

1577

Can clean earth cable be considered as low current cable

2028

what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?

1687

how does grading rings & spacers in transmission line works? Working Principle?

2150

What is corkscrew rule?

1211

Define norton equivalent circuit?

1124

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