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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,

1204

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

1 2280

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

Flextronics,

1199

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

1 2430

what the good value of earth resistance test

3 3357

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 9661

Why we use RYB phase sequence?

3 5312

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

Jindal,

1 3023

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 3499

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 2456

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

1082

How to select earthing strip for 100kw induction motor ?

2 1762

conditions for parallel operation of dc generators

4 10573

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

1038

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

BARC, HPB,

6 35628


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Un-Answered Questions { Electrical Engineering }

WHAT IS MEANT BY TV TERMINAL IN 500MVA TRANSFORMER?

1189


PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

1314


What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?

526


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

727


how was your last weekend.

771






why high speed tripping relay is used in protection circuit why not normal relay

397


state the disadvantages of carbon filament???

1927


Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?

1042


How cmd is calculated in case of energy neters

903


WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB

1476


what are the different methods for the starting of a synchronous motor.

173


What are the different power system losses and how can it be eliminated?

1090


What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

526


How to test the vector group of a Yd11 transformer? what are the relations to be checked between various vectors to confirm this vector group?

3455


why is the conservator tank painted white on the transformer

1761