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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

State the difference between Surge Arrester and Lightning arrester,Both are same or not?

 7 36557

please mention the minimum IR value for different voltage systems

 6 6830

which types of tests are required after commissioning of 6.6 kva tranformer?

Reliance,

3 5242

What is battery Limit ?

NDDB,

4 22975

Why electrical heaters are not provided with overload relays in circuits

 1 4173

In transformers Which type of connection is preferred for harmonics to be minimum. primary : secondary star without neutral:open delta star with neutral :open delta star without neutral: delta star with neutral : delta explain why

Genco,

1 4280

The exciting current of a transformer is non sinusoidal. why?

 2 10216

Why one can experience electrical Shock due to Voltage or Current?? or both voltage or current??

 11 11965

Give the selection criteria of a 3 Phase transformer for industrial purposes ?

NDDB, TATA,

5 10380

what is the difference between between open delta and broken delta?

Reliance,

5 26043

can any one provide some material?

 1 2877

what is the requirement of commutator in a universal motor?

 3 4319

Which pump set is more suitable and economical for liftingwater from 300Mtr borewell? A. Compressor Pump B. Submersible Pump C. Jet Pumps D. 25HP Centrifugal Pump Q. from PSC Test 22-11-2008 Meter reader

 8 21786

Why Neutral Earthing pits and body earthing is interconnected

Taj Group,

3 14140

Why Earth pits are inter connected

Airtel, Taj Group,

8 18007

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Un-Answered Questions { Electrical Engineering }

I COMPLITED MY B.TECH AND 10TH CLASS WITH 70%MARKS BUT 12TH CLASS 55%MARKS..CAN I GET INDIAN RAILWAY RECUREMENT EXAMINATION?

1704

reason of diode failure in alternator

1396

What OPGW is better than Microwave or PLCC???

3642

I meggared my 2c*70 sq mm AL AR XLPE cable. its one end show 50 M ohm . is my cable is safe for laying. I have only one phase and neutral.

1329

how to maintain frenquncy with syncronising sub-station for distribution

1649




What is purpose of reactor?.What is different between line and bus reactor?

1462

what is the difference between Power and Distribution transformers ?

1624

The size and construction of bushings in a transformer depend upon?

1165

how can you size an automatic voltage regulator?

1862

in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?

1794

what the principle of sincroscope?how it works?when it needed?

1754

what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?

9681

What are the types of windings present in the ceiling fan? What winding will be effective first when we started the fan?What are the resistance and inductance ratios comparatively at the initial speed and full speed of the fan?

2435

SUTIABLE FOR ohm's law super conductor

1508

advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor

1377

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