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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why we generate transmit and distribute electrical supply in multiple of 11

NHPC,

6 12197

why t/f are rated in kva. is it conserned with p.f.

3 5683

Why X'mer rating in kva only?

4 7273

Transformer/insulating oil tester(BDV tester)

1 4401

Hysteresis loss in a core is due to what reason or property of the material used for that core?

1 4618

Does the hysteresis loss is due to retentivity property of the material? or it is due to reluctance property?

2 5686

how slip power recovery system work

Ambuja,

3041

Is there any other method of damping the oscillation in a synchronous motor other than using damper winding and if yes what is it?

IOCL,

2 5998

How much current can carry the 1 sq inch super enamelled copper wire?

4 7152

as we know that N=120f/P speed of an im can be controled only through changing no if poles, can we control by changing the frequncy????

JSW,

7 10711

difference between torque mode and speed mode

JSW,

4 12217

diff. between tension mode & speed mode

BSL,

2354

my 10 hp submersible pump is tripping when connected through ELCB.I have checked the megger value of the coil's with body.It was found to be 0.2mega ohm.that is leakage is there.But when connected to mccb it is not tripping.no leakage current in the motor.Is it safe to connect to mccb? what are the problem's will arise if future?also tell me in ELCB no neutral is connected to motor.than how ELCB was working?

1 6959

i am gng to visa interview this july i have 4 backlogs gre 1010,toefl 75,pls give me the tips pls pls

2170

whatare the disadvantages occur,if the form factor of transmission will not be equal to 1.11

1878

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Un-Answered Questions { Electrical Engineering }

Working of microwave oven?

2264

What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.

2355

What is steady state response?

1336

A 500 V shunt motor runs at its normal speed of 250rpm when the armature current is 200A. The resistance of the armature is 0.12 Ω. Calculate the speed when a resistance is inserted in the field reducing the shunt field to 80% of normal value and the armature current is 100A.

2526

how to deside the capacity of chock for drive?

2079

what is per unit calculation?looking for simple and strong explanation thk u

2903

What will be the current if the resistance total in a series circuit doubles?

1230

How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

3395

How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?

2619

How we can recongnise the phase displacement of transformer connection between primary & scondary...plzzz explain it with example.........

2516

Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above

2234

any idea abt REVERSE METERING concept.........?

2260

What is lighting kitts.

2123

WHY THREE PHESE SYSTEM VOLTAGE APPLIED IN 440 VOLT

2357

what is harmonics? what are the factors it will depend upon

2039

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