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Electrical Engineering Interview Questions
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why HT armoured cable does not glanding

TCE,

3684

AC SUPPLY HAVING 230 V FREQUENCY REDUCED ZERO IF MEN TACUCHES THE SUPPLY WEATHER HE GETS SHOCK OR NOT?

 8 8069

What are the drawbacks of HVDC system?

 4 4595

I have 380.KVA Volva Penta DG set. Tell me how to calculate units from KWH reading....

 3 5625

I have 380.KVA DG set how to Calculate the units from DG.

Ozone Pharma, Sperry Plast Limited, Sterling,

2 11036

While performing load test on DC SERIES MOTOR, does the voltage decrease slightly. Why?

 2 5491

what is the difference in using the 125% and the 250% factor of safety in calculating circuit breakers capacity for motors,which is more reliable to use the 125% or 250%??

 1 3790

sir , what happen if we decrease ( approx 3 inch ) the lenth of shaft in 110KW Induction , three phase motor. actually a 110KW motor is couppled with star couplling to 120TR compressor. When we doing maintenance in compressor it is required to skid the motor backword and resulting dis- alightnment . so we want to change the tyre coupling in place of existing coupling. so it is required to cut off the rotor aprox 3 inch form driving side.

 2 3252

what will be the difference on output when 3phase I.M. is given a delta or star supply?

 3 4056

The following equipment are installed ia a plant 1. 110KW Induction motor 4 Nos 2. 30 HP motor 3 Nos 3 15 HP Motor 3 Nos 4 7.5 HP motor 4 Nos what is total load of plant if one of each is stand by.

Blue Star,

3 4547

what use can we make of 3rd harmonic component

Bhel, General Motors GM,

5 11693

What is 100% protection of generator? Why 95% protection is used not 100%?

NTPC,

9 37381

What are capacitive,resistive,inductive surge absorbation? What is ferranti surge absorber? What is lagrangian cost? What is Px operator?

 1478

how the voltage between all the three phase is zero can any body explain me

 5 5729

what is the difference between energy efficient and high efficiency motors

 2 5009

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Un-Answered Questions { Electrical Engineering }

While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

1448

WTA used cb?

1435

Atwhat condition reverse power relay will act?

1791

Initially, when the input is not equal to the output — what type of response is this?

657

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.

1331




What are the applications of autotransformers?

631

Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards

1647

what can be the causes of capacitor start motor having a higher current that its actual

1493

what is (+) and (-) in generator field detector stand for?

1375

we are small scale industry in production of rice & rice bran. Pls let me know how to take contract demand for our industry.. (for information we have total 600.hp)

3438

WHY THE COLOR OF OUTDOOR TRANSFORMER IS BLUE ONLY???

1628

1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?

1588

what is meant by impulse voltage?

1536

What is step signal?

628

diff b/w normal grounding and resistance grounding

1402

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