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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

compare between starting charactristics of synchronous motor with those of 3Q Squirrel cage induction motor

1791

What are all the conditions to protect generator & turbine in thermal power plant?

Power Grid,

1 4210

What is the need of generator relay panel

Newell,

2099

What is function of Diesel Generator?

Bhel,

2 4587

why dc motor runs slowly when dc supply is given?

L&T,

2 5474

What is difference between wire and cable ?

Havells,

3 7961

how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

Sandhar,

1963

if we have a power factor 0.99 and we add a capacitive bank with it then what happen?

University,

4 5531

15 kva dg set single phase takes 63amp( approximate) while same rating 15kva three phase takes 35amp approximate. why ? and what will be per phase current for 15 kva

TVI,

2 4011

What is slip in induction motor?

3 4410

Can we calculate the P.F if we know the only load on alternator .

Medha, Medha Servo,

1 5329

How we calculate the Multiplying Factor of Kwh meter for 3 phase alternator.

Cesco,

1888

What is the multiplying factor if line ct ratio is 1000/1 and meter ct ratio is -/5 ?

1 3156

how can we understand that where we have to use ac or dc coil for solenoid valve and why?what is the different between coil of ac and dc explain please.

TK Group,

1980

how can we determine size of a cable by knowing the kw or current rating of a load?how can we calculate the resistance box of a slip ring motor?

TK Group,

1764

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Un-Answered Questions { Electrical Engineering }

What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

1917

Help need in transformer !? Hello Friends The parameters of 2300/230 v 50hz t/f is R1=0.286 ohm R`2=0.319 ohm Rc=240 ohm X1=0.73 ohm X`2=0.73 ohm Xm=49.2 ohm Secondary Load impedance ZL=0.387+J0.29 solve the exact equivalent circuit with normal voltage across primery.. I know every thing but i cant find CURRENT I1=? and I`2=? Please help me give solution or only Formula please please...

3109

why did youi choose this career?

2220

WTA used cb?

1925

what is dry and wet frequency withstand voltage? why & where it is used??

2437

sugest any typical project ?

1820

what is formula to cal cute earth pit numbers and size of earth strip used in earthing?

2216

if a.c supply is given to the motor,, what happen?

2162

what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)

2158

All tape of electrical questions Answers tape of motor transformer e.o.t crane

2657

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT-SWITCH BOARD,MLDB,ACB,BUSBAR,ETC,......?

2097

How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

1974

What is meant by time harmonics and space harmonics?

2805

how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64

1454

What is the function of RCBO? What are the different sensitivity ratings & each application?

2814

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