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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What_is_mean_by_negative_dc_voltage? why we use -48v except +48v in DC power supply systems.

APEL, BSES,

2 7020

how ship earthed?

Marico,

5 18394

why three phase three wire system probably did'nt have neutral

Marico,

2 7759

what is the difference between synchronous generator & asynchronous generator

Reliance,

4 22404

what do you mean by leading power factor & lagging power factor

Suzlon,

13 69176

In power transformer YnD0 Vector Group is possible or not? if possible, what will be the vector diagram and what are the conditions?

2 9388

What is class 2 coordination ?

2 3758

what is difference between mccb,mcb,elcb,pccb

7 22349

how generator generates electricity?

Suzlon,

1 4566

what is the significance of tan delta testing?explain the theory?

7 37466

how to test generator protection rotor earth fault relay and locked rotor test?

1 14509

hoe to test voltage restrained overcurrent relay?

2 5648

What is the Difference Between MCCB & ACB & VCB

3 9635

Pls say , how we calculate lux / sq.ft, which formula used for calculation

5 18504

how calculate busbar size for rated amps, which formula use

Rites,

2 11654

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Un-Answered Questions { Electrical Engineering }

Cables Construction hi friends, 0.6/1/1.2 kV LV , DC and Control cables are concentric copper conductor what does its means and what is the use of concentric copper conductor,and are this with copper tape shield or copper screening, ? thanks

1724

Usage of flywheel diode in relays

1875

design of IGBT firing circuit for 11KV

2590

what is plunger and what's the use of it in motor alignment?

2609

What are the effects of adding a zero to a system?

1222

what is the formula for computing cable tray size & capacity

2121

Why we use mho Relay in long transmission line?

1413

What is the role of feedback in a closed loop control system?

1048

what is the working principle of energy saver control panel. please give the complete calculation & theory.

2382

What is EHT tariff or Power factor Tariff ????

2308

How PADO software increase the efficiency of power plant?

6446

Use of switch mode power converter in real-time basis?

1123

Why are iron cores in transformers made laminated?

1067

LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?

2115

what is the step by step formula for calculating bus bar phase and neutral size of a panel board.suppose the incomer of panel board is 100A..???step by step answer please

3675

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