Electrical Engineering Interview Questions
Questions Answers Views Company eMail

132 KV TRFO BUSHING CT BURNT WHEN A 6.6KV HAS BEEN APPLIED TO IT .WHY .ANY REASON ?

vguard,

3 6199

why is only third harmonics is dangerous for electrical equipments?

3 10653

what is the contact resistance of sf6 circuit breaker??

2 7014

what is the contact resistance of vacume circuit breaker??

1 3391

what is the contact resistance of Air circuit breaker??

1 4007

How check proper electrical earthing of machine.

DRJ ARDE,

5 15295

How check electrical motor winding.

DRJ ARDE,

4 8835

BRIEF ME CHECKING PRCEDURE OF BATTERY 12V 26AH

DRJ ARDE,

1 3489

are induction motor have poles? yes / no , why?

3 4426

how open delta PT works & what is its construction?

1746

is there any device that works properly accept relay, it may be fuse but if i want fuse of 33kv 300 amp it is avaliable, pls give me details

1559

what is the use of Reactive power in power system?

3 8639

What is the comparision (advantages / disadvantages) of 110V, 60 Hz system to 230 V, 50 Hz system.

2 7753

A dc motor running on dc drive whose input is 3ph AC what will happen if we change the phase sequence of dc drive for e.g (R Y B) is connect as R B Y, will the motor run as same as previously running before changing phase without any effect

4 7112

Why corona leads to production of Ozone and glow of the color VOILET?

1493


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Un-Answered Questions { Electrical Engineering }

why wire sizes are 3/29 or 7/29 and why not wire sizes are 2/29 or 6/29?

4651


How we can come to know the substation range,without go through any name plate ?

1479


what kind of quetions will ask in BHEL in interview? Plz help me?

1569


What’s electric traction?

662


Hi Friend I am used multimeter to measure the voltage between R Phase(SS1) to R Phase(SS2). In SS1 is connected with UPS loads. But I am getting voltage between these 2 R Phases. Please give some idea friend

1499






what is metering cum synchronizing panel and how it is used?

3979


in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

1559


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

1649


In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

2647


The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition

1468


Why transformer used in UPS??

1023


sir& friends i want the collection of recent quetions asked in interview of top most companies please send me on my email san.jsr@hotmail.com

1331


Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?

1601


May I know how much values to be set for earth fault, over current and short circuit values at 11kv side? I have 11kv van 1250amps rating. Present it's taking load 80amps?

1015


-What should be minimum value of insulation resistance and maximum value of earth resistance at any electrical instillation and what is method of testing the same.

1563