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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

How are calculated the aluminium busbar cross section area?

2 9675

Are same transformer be employed for step up and step down services?

3 6228

On what basis primary and secondary of a transformer is chosen?

2 5438

how to male a d.c bettery to blow a 230v bulb?

1 4501

Can a 50-Hz designed transformer be used at 60-Hz system? Is the same remains true, when a 60-Hz designed transformer be used at 50-Hz system? Consider only frequency variation. The voltage remains as rated value in all cases. Justify the answer.

2 8124

How to protect the water pump by no load running.

Cushman Wakefield,

9 14522

Hello, im taking an introduction to PLC..and i'm having a hard time on creating a program for 2 lamps blinking alternately with this button characteristics: 1.) One push button (starts upon pressing) 2.) Same push button (when pressed again, will pause the system) 3.) Same push button (when pressed again, will continue the paused system) 4.) Same push button (when pressed within 2 seconds, will shut off the system) Pls..i know this is just a simple problem for you guys..

2 4523

In n high voltage 11kv system What happened if 1 of CT cable (IDMT) loose.Will e/f or o/c trip.please explain detail

1 4351

In UPFC,What is the need for Dc link ( DC capatior)?

1 5240

Can a transformer designed for a particular voltage and frequency rating be used for different set of mentioned ratings? Assume that the winding does not get burnt because of overheating at higher voltage. If yes, then under which constraint it is possible?

1 3384

why microprocessors are named as 8085 ,8086 etc? what's the reason for this???

Bhel, HCL,

15 45490

what is basically a pulse transformer?

1 9206

what is relay multiplier

Atomic Energy Commission, Bhel, Wipro,

1 6513

whose motors self starting synchronous or Induction motor?give fact reason why not self starting another mother

2 5570

SSC JE ELECT.

CPWD, SSC,

1 19423

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Un-Answered Questions { Electrical Engineering }

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

For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?

1966

from which subjects most of the technical que will b asked for hpcl(electrical).pls help me

2063

Incoming line 11kv And transformer capacity is 2500kva. Consumption load is 1300A. Then fuse capacity is 11kv line.

1733

We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's

1985

What do you mean by reach and reach the point of the relay?

1319

What is meant by full pitched winding?

1274

why occ characteristics curve in not tracing back when we are bringing back the rhoestat?

1921

how is control wiring coding is done in a CRP panel ?

2086

What are the different types of LT Cables?

1144

please send me previose rrb junior engineer qustion papers

2207

In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above

2306

Can a generator runs after getting 1st stator earth fault.

1484

what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?

2139

Give some example of fault limiting devices?

1448

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