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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

present we are having 0.8pf but I want increase it up to 0.99 so what is the formula for it and how can i calculate?

ABB,

3 6976

We have two parts in generator, electrical & mechanical. how it works?

TATA,

1911

how to convert psi into kilo pascal? what is the suction pressure & discharge pressure of chiller?

1 3993

how air lock will be removed from generators, how it happens?

ABC Engineering,

1 8793

what is the d/f b/w dol & star delta starter.

2 4872

we have provided 30 nos. relay contacts in panel.I want to know how do we do the numbering for the relay contacts as per any applicable standards

1972

what is the principal of transformer?

2 5660

What is EHT(Abrebiation,Function,Voltage Regulation & how it works?

Adhunik,

2 5581

In what voltage EHT works(133/132/33/66kv?

Adhunik,

3 6340

How does HT work & Voltage required?

Adhunik,

2216

what is bus coupler, where it used.

Diebold,

14 85183

What is fault level? How can be calculate the fault level?

1 4269

How to calculate cable size? How to O&m of vcb?

2341

sir what is the minimum IR value of 11 KV alternator?

Kirloskar,

4 14982

sir what is the purpose of SF6 in HT breaker and what is the pressure should be maintain in the breaker?

Kirloskar,

2 7618

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Un-Answered Questions { Electrical Engineering }

What is meant by celling voltage & current in excitor ?

2031

what is the difference between c power and U power acb breaker

6350

in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

1798

i need mat lab program to find out the transmission line losses,regulation and losses

1866

What is the working principle of servo motor? And explain it.

1891

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

1795

In india, according to trade theory above 5 HP motor reqired star delta starter. But we R connect 11 KV motor with 14MW in Direct to line ( With VCB starter combination) Can U Guess, How it is possible ?????

2089

what is the relationship between phase & neutral

2544

If VFD is On but no starting commond on it. so how many outpout voltages of VFD

1119

Why do we need interlocking in a HT metering or Ring main unit switchgear?

1968

WHAT ARE THE CHARACTERISTICS OF AN VOLTAG AMPLIFIER

1986

what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....

9019

what is earthing.how we make it,describe briefly.

2571

grr resistance & contrator malt continuous

2096

How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

2139

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