Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why we can choose induction machine in wind mill? why can`t use synchronous machine?

3 3383

what should be the air clearence between phase to phase, phase to earth in Medium voltage switchgear for 3.3kv,6.6kv,11kv,22kv and 33kv? Which is to be referred for this?

DLF, Sanmar, SEC,

1 5153

what are the shades for mimic diagram i.e for 3.3kv,6.6kv,11kv,22kv and 33kv? which is the IS for mimic diagram?

2 4754




What is Vk and Imag i.e Knee point voltage & Magnetising Current? How to calculate above values? How to define accuracy class 5P10?

Transco, Torrent Power, Deccan Cements, Doosan,

7 37692

FOR WHICH FAULTS OR CONDITIONS DOES A TRANSFORMER DIFFERENTIAL PROTECTION DOES NOT OPERATE???

10 6667

WHY DIODE IS CONNECTING ACROSS SWITCHES

5 6084

what is the meaning of bus bar, in electrical panels.

HLG Habtoor Leighton Group,

13 39349

what is a lightning arrester???

ABB, NTPC,

12 15306




flurescent bulb rating is to 230v,50HZ.now flurescent connected 230v,25HZ.whether nreduced frequency will affect the glowing properties of flurescent.

6 4315

what is ac servomotor??

7 5309

what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

1 1949

what is the effect when the shunt field winding is opened in dc shunt motor (i) at the time of starting ? (ii) in running condition ?

4 11420

what is relation betn. KW & KV?

10 28005

One watt is equal to how many? we says one watt bulb,means what it consume?

3 4902

Will u plz give me simple diagram for tube light connection & also function of chock?

TCS, Jindal, Bhushan Power Steel, Windmoller, Dalmia Group, Practical Viva Questions,

8 20809


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Un-Answered Questions { Electrical Engineering }

How shall i select the value of capacitor or inductor in a system?

667


Application of statically induced emf

411


63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?

1260


what are types of encoder

595


what type of motor used to move a 1 ton gate? and relate ratings with load.

538






If there is no problem with the electronic circuit and regulator then why the motor start rotating at low value of regulator with full speed both at laod and no load??? and if my judgement of circuit is wrong then what is your openion?

799


Could u pls tell me the NPCIL electrical engineering interview questions for Executive trainee, and also guide me how to face the interview.

2867


Can anyone tell the proper diagram of star delta starter????

666


when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

662


How RTCC panel is working and give single line diagram for RTCC with transformer?

1859


1. How many types of mangers? 2.How many types of capacitors? 3.pls tell me normally types alternator problems?

785


what is mean by dual digital protection in the relay field?

715


What is the difference between Delta & Wye windings?

806


33kv substation lay out details & line to line & line to earth measurements

1301


what is the id1 & id2 setting in differential protection relay of CSPC?

1236