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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Dear Mr B C pal...Can you plz. put some light on principle of operation of Z-Ct in conjunction to its use with 1Cx1000Sqmm HT Cables & Directional Ground Fault / Over Voltage Relays...Regd..Parag v K 9899115632

2813

Explain about 3 phase motor fault current calculation with examples?

QTC,

2995

Initially motor starts with star connection ,after few timing changes to delta connection, why the motor should run continously in star connection,it gives high torque & low current?

3 9671

what is effect of reverse c.t connection on metering.

Cushman Wakefield,

4 16171

What are the advantages of D.O.L Starter in 3 phase induction motor?

4 9333

while running ,synchronous generator is being turned off.what will happen to the current flow??

1 2731

What happen if field ckt is open when a sailent pole alternator connected to infinite bus

Bhel, Nilkamal,

3 6835

without name plate detail of blower how we can find out the HP & Rpm ? the input voltage is 230v single phase

1 4121

What should be distance required in between two phase of HT cionductors in open area??????

3 10251

For a DY11 lighting Transformer on primary side whee to connect fourth lead? from nuetral or from ground?

Sabic,

3 6396

what heppend if we are connected u1-v1-w1 as a star point in the place of u2-v2-w2 in power genration

2299

Dear sir, By which formula u can calculate for a particular kv line there is a range of mw.

2178

R u say ,that is there is any flux in your room.

1 4971

In which connection the voltage will be more , in star or delta connected motor?

3 6946

why we do occ & scc test in transformer ?how we can do it ?

2 12451

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Un-Answered Questions { Electrical Engineering }

Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.

2034

how to carried out DAR test in 11 KV Alternator ?

2360

how braking & making capacity of circuit breaker are calculated?

2354

EHV current carrying parts need to have smooth finish,then how can a 245kv GIS with emery finish can run so long?

1950

Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?

2051

If a surge divertor is required to be protected by 32 amp C Curve Circuit breaker does this limit the amount of protection from surges that you will acheive

1835

What are the disadvantages of autotransformer?

1160

What is the difference between type1 and type2 relay protection co-ordination for motor feeders

2284

A power transformer 4MVA/11KV/0.415Kv has been out of use in 12years. what maintenance actions/test need to be carried out before energizing.

1368

Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

2311

What is the most accurate way of testing ELCB?ELCB is better than RCD?

3388

What are the basic component of a cro?

1292

How is the gain affected by the introduction of feedback in a control system.

1202

which type of cabel

2450

WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?

1803

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