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,

2059

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

1 3559

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

Flextronics,

2167

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

1 3801

what the good value of earth resistance test

3 5811

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 11760

Why we use RYB phase sequence?

3 7838

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

Jindal,

1 4427

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 5674

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 4195

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

1922

How to select earthing strip for 100kw induction motor ?

2 3504

conditions for parallel operation of dc generators

4 13298

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

1895

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

BARC, HPB,

6 40411

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Un-Answered Questions { Electrical Engineering }

Define demand factor?

1046

Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?

3051

if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?

1879

why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?

1814

What are the basic properties of signal flow graph?

1151

Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?

1197

electrical ques

2084

Tell me all plants load factors i.e which plant operating on which load?

2031

What are the essential characteristics of signal flow graphs?

1045

WHAT CAUSED THRESHOLD VOLTAGE TO EXIST?

4004

Why we are using only Dyn11 tranformer in distribution system but not using a Dyn1 in distributing system?why not and advantage and disadvantage in both

2677

In parallel operation time both NGR’s close or not close if both close what will happen

3677

Why we specify TNC switch with 1NO 1NC ,2NO 2NC ? how we get connection.?

1723

If more than rated DC voltage appears across trip coil of the breaker, what will happen? e.g. in 110V DC circuit system, if voltage across battery terminal showing 121 V

1607

What is the emf equation of a transformer?

1179

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