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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

How it can worked plc based electrical system And which type of software using.

ITC Infotech,

2115

HOW TO SIZE THE TRANSFORMER OR WHAT ARE THE STEPS INVOLVED IN FINDING THE SIZE OF THE TRANSFORMER FOR GIVEN LOAD SAY 2000KW ?

1 3629

what happen when power factor of 2 parallely operated transformer become equle?

Flextronics,

2208

how to calculate short ckt current of trafo. ex.3-ph 3MVA trfo. 11/440, impdence voltage=7.25%

1 3882

what the good value of earth resistance test

3 5962

If two transformers same rating(11KV / 440V)connected in the same primary line(11KV), can we connect(bus coupler) secondary side directly or need a synchronization????

3 11899

Why we use RYB phase sequence?

3 8010

what is the maximum rating(KVA) of transformer can be used in distribution side..(11KV/440v) and why??

Jindal,

1 4525

In a running D.G set engine and Alternator is revolving at 1500RPM but no output in the terminal>>>>what to do?? someone told excitation problem ....please advice

3 5815

If the Power Factor of generator is 0.85...What does this mean and Can the motors connected to this generator operate at PF more than 0.85 ?

1 4302

How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?

1982

How to select earthing strip for 100kw induction motor ?

2 3611

conditions for parallel operation of dc generators

4 13518

How can we calculate ac current from the given DC current when AC voltage is given?

1952

why induction motor having low power factor at starting time and high at full load.

BARC, HPB,

6 40700

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Un-Answered Questions { Electrical Engineering }

in electrical control panel. how can i choose the cable rating. (example - 11kw motor, 18-25A mpcb}

2858

Explain the functioning of diode?

1095

What is effect of over voltage and under voltage on ACB

1982

why constant voltage transformer should be start without load? and if started then what will happen?

2045

State magnitude criterion.

1116

th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.

1967

How Can you do Maintenance of ACB of 2000Amperes

2073

I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???

15632

What is the Minimum winding resistance of motors ( small & big)? referance range

2308

What is the physical significance of phase.. i.e. what is exactly the meaning in layman's language.. 1 phase, 3 phase etc ???

2169

HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)

1948

Classify milling machines.

1135

sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

1895

how to design the heater in temperature control unit to heat 50KL of water?

1927

how to get bearing & winding temperature of an induction motor?

2020

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