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Electrical Engineering Interview Questions
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can any one tell me about the Extra low voltage systems?From where we give supply to these type of systems??

MCB,

1623

How the power factor is more in high speed machines

 1 2963

what is DRP panels?

SECL,

1781

Why we say three phase voltage 440v.

VDP,

2 4313

if the field circuit of a d.c. shunt motor running without load gets opened, then the motor will

 3 4739

Generally we denote power in 'p',voltage in 'v'but why can't we denote current in 'c' instead of I.

Bhel,

4 10382

why do we prefer alternating current in india where as in USA prefers DC?

Bhel, GMR, Texmo,

3 7369

What will happen if 33 kv is given to a 11/0.415 kv Distribution transformer?

SECL,

2 4527

For an 100kw generator, only 50kw of load is connected. Will the generator generate only 50kw or 100kw. If it generate 100kw what happens to rest of the 50kw. What happens if we connect more than 100kw of load?

L&T,

2 5809

What is the difference between earth and neutral

ABB, Tamboli Engineers,

4 8062

what is a,b,c,d checks diesel generator?

AFMC,

1 3144

what is alluminium arm in ab conductors

 1604

WHAT HAPPEN WHEN A DROP OF WATER MIXED UP WITH TRANSFORMER OIL ?

 4 7071

What is the difference between AC and DC injection methods for rotor earth fault protection

Asian Alliance Insurance, NBVL,

1791

Why collecting electrode of ESP to be earthed

NBVL,

1740

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Un-Answered Questions { Electrical Engineering }

If the earth is a good conductor of electricity, why don't people get shocked every time they walking on earth?

1416

Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

1079

700KW 6.6KV slip ring induction motor to use VFD to control the speed

2887

2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?

1704

PLZ EXPLAIN THE INTERLOCKING AND CONTROLLING OF CONTACTORS????HOW CAN I DO THAT?

6058




What is the formula to calculate the rating of power cable for three phase current.

1755

which network topology offers the greatest level of tolerance?

1705

Who many reason of ignition fail ?

1585

design a LV scheme for a 15 storied building?

1585

how to test and calculat the head and discharge in borewell compressor

1806

what happens to the supply voltage if there is any change in frequency?

5847

I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.

1766

I need bhel electrical test pattern & paper

1509

Operation of isolators.

1558

Write a note on materials used as a fuse element.

1781

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