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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.

Eskom,

3535

What is x/r ratio?

1 4313

Can you explain operating principle of Inverse Definite Minimum Time” (IDMT) relay

2 13503

Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.

2071

how do you find making current and breaking current of the circuit breaker

1 3822

how you connect the induction motor first in star and then delta in star-delta starter

1 3474

what is the differences between single phase ind. motor and three phase ind.motor?

3 5670

what is the difference single phase and 3phase starter

1 4494

at meter room 50 hrc switch installed,but there are not get earthing proper,so what happen?and 11kv transformer out put going in to hrc main 400a three nog each? so earthing is require for all switch? (some customer made earthing at there home.)

Ebrahim Textile, Siemens,

1860

?? how to calculate lighting system ????

L&T, Synergy,

1 3567

what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..

Sony,

1966

how to check avr of dg set of 125kva

2550

what is the difference between arc and spark

2 6450

you have a 2 tonne ac that operates for 2 hrs daily what will be you monthly bill (this is complete question asked nothing else was given)?

1 3352

how to measure winding resistance of single phase motor?

Adani, Dodsal,

1 2958

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Un-Answered Questions { Electrical Engineering }

what is diff. between earthing grid,earthing mess, earting grid?

2359

what's the simultenous maximum demand (SMD)..what the diffrent MD and SMD?

2418

Safety of dry type transformer

1910

What is T’Q and X’Q and X’D ? and what is saturated as well as unsaturated ?

1745

Determine the BTU size of an aircon for 20 sq metre room

1829

I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer

1874

Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com

1888

what is the principle of operation of tungstun bulb ??

1785

Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

2040

what is working process of star delta controlling circuit ?

1835

where lt & ht capacitor used

2173

what is the difference between pvc & fiber glass cables

1515

What are the basic elements used for modeling mechanical rotational system?

1063

What is called grain-oriented laminations?

1089

Diagram on interconnectivity of 11kv transformer with RMU (i.e, one incoming and two outgoing or two incoming and one outgoing)

2671

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