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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What is the difference between the watt hour meter and Var hour meter in terms of internal connection and work theory . ie "When the meter records watt-hour an when the meter records var hours ??"

13 19794

how we check vector group dyn7

1 4769

when we put inducter in neuteral grounding of genrator.

3 5378

why we use sinosidal voltage / current instead of others in system?

2211

Please let me if star point(Nutral) of Delta/ Strar transformer, in 4wire (TPN+E) is tobe gruonded seperatly,inaddition to LV Panel earthing????

1 3215

Why we use three phase world wide why not four phase or five phase being used?

8 12460

What is the acceptable resistance range of UPS battery

Cisco,

2 4916

Why we can not get 100% efficiency from a Gas Generator?

1 3461

What is the meaning of BREAKING and MAKING CAPACITY in case of CIRCUIT BREAKERS.

2 7258

Can a dc motor works as a dc generator. If yes , then how?

2 5856

A long transmission line is limited by - a)thermal limited b)voltage limited c)stability limited d) L,C limited please explain with proper reason.

1 3307

A well system is when , no. of bus bar is less or more. Tell me the concept of it.

1922

what must be the mf for a meter with the following conditions. line ct ratio-100/1 line pt ratio- 220kv/110v meter pt ratio- 3X63.5V meter CT ratio- -/1 A

1 3281

why we use CVT (capacitive voltage transformer)in switch yard?

5 15831

Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . please reply..............

NTPC,

9 22744

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Un-Answered Questions { Electrical Engineering }

how does a submersible pump work..?

1884

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

1979

List the advantages of star-delta starter with induction motor?

1011

My load is 1635 KW. & current pf is 0.884, I have to improve it for 0.99.Please suggest what KVAR value is needed?

1591

TELL ME WHAT IS INDUCTOR AND CAPACITOR WHAT IS IT BASIC OPERATION ANDFUNCTION?

2019

do we use links in a dc circuit?if so what s its use in it?

2024

What is the effect of positive feedback on the stability of the systems?

1086

how many joints are allowed in underground HT cable of 1 KM

1878

How to calculate the fuel consumption for 600kva DG genset which connecting with 25%load?

2128

how to ctrl motor by use of ac or dc drive.plz explain evdintly

2047

What is the difference between PLC and Embeded system

1432

How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?

5400

how to calculate cable size in diffrent loads?

2083

what is meant by 3rd hormonics ?

2024

I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

2121

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