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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

when we supply in primary side of transformer then the supply goes in secondary side?how it works?

4 6625

how to protect motor in dol starter having capacity of 30 hp.40 hp?

3265

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?

1991

howmuch current can carry the 2.5Sqmm copper cable?

42 106343

what is mutual induction principle?

6 42108

What is the requirement of grounding the neutral of single phase generators on load? If the neutral is not grounded, what will be the effect?

HAL,

2171

What is the difference btwn grounding and earthing?

HAL,

11 17475

Whats the principle of lightning? How protection against lightning is achieved? Types of protection? How to select the height of lightning spike? as per the area.

HAL,

4 11728

what is the differance of acb and mcb and mccb

MacAir, MDS,

12 37056

what is the function of a commutator in a dc generator?

College School Exams Tests, NTPC, TCS,

14 76871

how we are measuring the winding temperature of the transformer?

11 37079

prefer any good electrical engineering book.....it should be useful in the practical fied?

1 9618

How to test Power Transfomer vector group in the field?

Al-Yamama,

3 7323

how will u exactly calculate the unit consumption of the Air conditioners?Split/Window/

3 7771

what is Touch and Step voltages

Pinnacle,

1 4649

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Un-Answered Questions { Electrical Engineering }

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.

2158

why we have to particulary use ACB for below ratings,even available of MCB,MCCB with that range ?

2986

Anybody know how schematic diagram for reverse power relay? RPR for generator protection

2202

how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw

2525

what is the use of the puls transformer in UPS & how it works???????????

2294

how can i get an electrical c-certificate?

2297

explain comutator action in detail.thanks

2300

what are the advantage and dis-advantage of 3 phase 4 wire energy meter?

2237

sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason

1544

Why Neutral Isolation is required?

2296

How to decide whether A / B / C / D curve type MCB should be used?

2364

how to determine the inrush current of a transformer

2679

pls tell me function of closing coil of A.C.B.

3440

What will happen if i replace a inductive proximity switch with photo sensor in a machine?

1883

Define early construction of human being

1963

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