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,

2069

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

1 3578

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

Flextronics,

2180

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

1 3814

what the good value of earth resistance test

3 5844

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 11779

Why we use RYB phase sequence?

3 7883

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

Jindal,

1 4449

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 5706

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 4222

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

1937

How to select earthing strip for 100kw induction motor ?

2 3527

conditions for parallel operation of dc generators

4 13356

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

1908

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

BARC, HPB,

6 40491

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Un-Answered Questions { Electrical Engineering }

What is the rating of circuit breaker needed for 300 KVA load in 33 KV supply line in a transformer of 33 KV / 415 Volt ?

1742

How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

2289

how the characterstics of control valve being done

2028

Ratings of power transformer,Distribution transformer.

1567

How much load can be taken for chiller from 1500 kva transformer

1227

What are IR values and what it should be for coil and for insulator

2950

Is better to supply the voltage for static exciter from the auxiliary power source or from the SG terminals? And why?

1891

what is the concept of directional power?

1972

what material is used in capaciter

1930

How to calculate cable size in HT AND LT

1974

what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.

5498

Differentiate between Zero and Negative sequence current

1873

describe the fully control circuit diagram of ac drives

1802

distribution transformer de-rating formula on over limit iron losses

2258

Differentiate between ideal and non ideal current sources?

1113

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