Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is brushless alternator?

1061

Can the same motor be operated in both direction ?

12 8891

why transformer donot allow the dc?

ONGC,

17 15918




what is skin effect? why is it absentin dc system

22 29945

why free wheeling diode is connected across inductive load

NTPC, Wipro, Omaxe,

16 40736

what is a relay?

31 13147

how electronic energy meter works?

12 47181

I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions

Wipro,

750




what is linear motor?

wbsedcl, Lucas TVS,

2 6454

In case of delta/delta transformer if the one phase is blown out then what will be secondary line voltage ?

4 6927

what is the function of commutator in dc motor?

TCE, HP, Raj Construction, Aviation, University Exams,

52 141845

what is the significance of per unit impedance ?

HP,

7 10962

draw waveform of capacitor or inductor in a d.c ckt(during transient) with zero resistance with it(in series or parallel)also neglect resistance of wire

L&T,

2 7879

why C.T secondary are rated 5A generally?

ABC, Bhel,

13 33427

Resistance of a conductor in a close electrical ckt is practically zero why?

1 4473


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Un-Answered Questions { Electrical Engineering }

Is it possible to connect a safety device in to parallel?

783


how we test a 3 phase motor on single phase supply....? HOW WE RUN A 3 PHASE MOTOR ON SNIGLE PHASE. supply for testing..? how we verify of a 3 phase motors 6 wire & name thame a1/a2/a3..b1/b2/b3 and c1/c2/c3 for connecting star delta starter ........i have only 1 phase supply ? help forum..........

3031


what are the applications of TIG welding

382


1.What will be stored in online ups EPROM IC?

809


can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value

653






Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.

668


If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

794


What is your acheivements

787


how does commutator convert a.c to d.c?

911


please send previous exams question papers

633


Difference between on line capacitor and Station type capacitor

753


electromechanical relay type identification example : type=tjmh t-stants for j- m- h-

739


What safety precaution are to be taken for avoiding electric hazards ?

670


I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

634


what are factors to be consider in electrical installation like load factor,diversity factor .....

630