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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

give me applications of sequence bridges . (used in 3 phase un balanced systems)

1932

IN SINGLE PH TRANSFORMER IF LEKAGE IMPEDANCE DROP IS NEGLECTED ,THE FLUX IN THE MAGNETIC CORE and the lekage flux linking a winding are a)proportional to the applied v to the winding i respectively.

2086

WHAT IS THE DIFFERENCE BETWEEN VOLTage and potential diff

5 9040

what is the range of thermal overload and over current. Answer should be in percentage of current.

RMSI,

2279

when two gen set runing in parallel but thay have diffrent pole pitch, then what will be happan

1977

what is the reason of current flow in nutral although load is balanced (three phase equal current)

3 6023

1.difference between sts & ats? 2.what is fm200 system brefly explain?

Ericsson,

1 7832

what is AVR and tell principle and working?

ITC Infotech, MIOT Hospitals, YCC,

10 41169

Where earth point should provided in Ships or Submirines.

SSC,

2 5681

How to calculate the cable size (XLPE)for suitable to 120KW load (if Motor or heaters etc)

SSC,

4 16201

What are the protections used in a HT breaker to protect the HT motors.

2 22238

How the cable size for a motor is decided

NTPC,

14 33074

one kva is equal to how much amps?

14 59422

WHAT WILL BE THE SPEED OF MOTOR IF NO.OF POLES ON STATOR ARE NOT EQUAL TO NO. OF POLES ON ROTOR.???

4 7766

which protection are used for turbo generator in thermal power plant.

Grasim,

1 7418

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Un-Answered Questions { Electrical Engineering }

Define sensitivity?

1055

Is vtg is controlled by the resistor? if else how much?

2046

what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks

1929

As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.

1628

what happen ehen synchronisation is done at below rated speed

2107

Difference between RCCB, RCBO and ELMCB.

4034

we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

1877

what should be the no load current for 3 phase ac motors ranging from 5 kw to 1000kw?

1754

IF TVM OF TRANSFORMER SHOWS POWER FACTOR ON 33 KV SIDE AS 0.97 LAGGING AND ON 132 KV SIDE IS 0.75 LEADING.IS THIS CORRECT.WHERE IS PROBLEM.

2308

what are the types of electromagnetic forces developed in practical transformer?

2580

What will be result if we connect LT votage to the terminal of HT motor?

2100

when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)

1965

HOW TO TEST A LIGHTENING ARREST ER ?

2170

How to Decide(calculate) Bush bar size for copper and aluminiam ?

2091

what happens in the short circuited secondary transformer,if the resistance of the short circuit is increased gradually?

2339

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