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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

Bhel,

2199

What is communication? What are the different stagesin the communication process?

1 3849

What happens if you give supply to the rotor of three phase induction motor?

11 33194

why nearly all the voltage levels are in the multiples of 11 like 3.3 ,6.6 ,33 ,11 kv.....

Suzlon,

8 15429

what are the current specifications of bus ducts ? i ve seen in IPBD bth 22000 A and 1500 A in 400 kv switchyard . why it is so??

1 3616

why nearly all voltages are in the multiples of 11?

5 10266

sir please send me previous year questions of jspl through which i could prepare myself fpr the test.

FGH, HFT, Jindal, Jindal Steel and Power, JSP, JSW, Lin Engineering,

64 71658

sir plz send some previous year questions of jspl.

1999

working principles of a generator

Cairn,

3 8153

can anybody send the rrb chennai &rrb bopal question papers of 2006&2007.My exam is on 12 oct 2008.Its urgent

2097

WHAT IS THE FULL FORM OF CABLE TYPE-AYWY,AYWAY,YWY ?

Polycab, VIR, XLPE,

6 96660

difference between ceiling fan

Altius Technologies, Raisoni, TCS, Uni Deritend,

24 54368

On what basis no of earth pits are to be decided either for transformers or for equipment?

BEL, Reliance,

8 23521

What is defference between earthed and unearthed cable(HT)? Which is better for under ground cabling?

1 7865

why should series motor be started with load and shunt motor should be started without load??????

7 26196

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Un-Answered Questions { Electrical Engineering }

Whats the minimum value for I.R. that can be allowed for HT & LT alternators for operation?

4152

What is meant by harmonic distortion?

1177

Is any generator is developed which is operated with out diesal or other expensive source?

2150

i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

1998

State the methods of improving power factor?

1216

for 750 kw LT load what will be the ht kva

1711

how to calculate regulation constants for over head lines? and what are the regulation constant for raccoon conductor at different voltage level and different P.F?

2045

I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

2029

what are the applications of PLC?

2021

What is rotating magnetic field?Discuss elaborately.

2704

1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

4931

different aspects of voltage stability

2133

hi,every one, i have to write the search paper on "performance policy optimization" of NGN (next generation networks). i need the material on this topic. can any body help me. please tell me any useful site where the good material is available and name of any reference book. it should be a great help for me.

1982

Why use in ht motore

1754

Why we use ups battery and dsdb battery in thermal power plant

2150

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