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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

can we synchronize star system generators with delta system generators?

2002

can we synchronize star system generators with delta system transmission line ? and how ?

2789

Can we convert off line transformer to on line transformer

NHPC,

1949

Can we convert off load tap changer transformer to on load tap changer transformer

2 6666

why two fuses are used in battery charging room?one in positive line and the other in negative line?do any DC system require two fuses?

HPCL,

1 4463

how many test is necessary for 27mva transformer.

HEG,

3 6956

Why we use series reactor in power system?

Cadbury, HEG, Uttam,

9 23495

How u can give the overload setting to any motor protection relay for a HT motors with formula and Example?

OCL,

2146

What is differential relay? How it operates?

1 5203

. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?

2090

What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

1944

While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply

2 8604

What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

1968

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

2163

Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

1 4197

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Un-Answered Questions { Electrical Engineering }

how to decide no of electrodes for 1600A LT Main incomer panel

1606

What is the tube exial fan?

2166

What is an iron loss or core loss pi?

1065

What is a commutator?

996

how balanced in star delta connection ?

2046

why fractional pitch winding generally used in alternators?

2906

Define load factor?

1065

What cmos is and its benefits?

1151

when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

1755

Why is the frequency not changed during transformation of electrical energy in a transformer?

1344

What is the difference between isolators and electrical circuit breakers?

1124

The height to which the liquid in a tank to be maintained for a certain constant velocity?

1946

Will any motor burn if voltage provided is lesser than the rated voltage???? If yes, then how is speed control possible with voltage control

2118

Parts of machine and their discription in details with suitable photo

2008

what is the difference between transformer,converter and transducer

1644

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