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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

IF avr is voltage regulator of genset means why we are giving genset CT sense to AVR ?

ABB,

3 4281

what is the use of CurrentTransformer in AVR ?

2 3662

what is the lemen of a single 5mm 13000mcd white led pls reply

Eskom, Sona,

1 3319

how much current does 3ph. 10 hp ac motor draw.

8 43998

Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

1029

technically, what is the reason behind starting the motor star the delta connection .. and what other ways to do this rather than using " star-delta transformer"

Wipro,

1205

What is the different types of cable & current capacity of cable

1087

what is formula of illumation calculation

1101

what happens when one of the phases out 0f 3 phases been removed under working condition and no load condition will the machine run if so plz send me why

2 2880

why the supply power frequency is 50hz in india? where as it is 60hz in US?

4 6135

How loading get increased in generator not the speed, while we increasing steam to turbine.

2 2915

what is purpose of manual bybass in ups

3 3294

how much current does 3ph a.c & d.c motor drawn.Plz. provide formula with example.

5 4253

Why the earth cable have current 1A - 2A , it is safety for Electrical system or earth cable should be zero amps ? how to troubleshoot?

1143

What do you mean by ACB and VCB?

L&T,

3 9370


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Un-Answered Questions { Electrical Engineering }

what is smart grid? why we use it? explain in detals bcoz i want give presentatin from it....

1083


area control error

876


HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS

970


which type of amplifiers are used in multimete?

1262


LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?

1195






What OPGW is better than Microwave or PLCC???

3224


What is knee point voltage of transformer?

283


Convert a star connected network into a delta connected network.

261


What is meant by celling voltage & current in excitor ?

1162


What is the ratio of Booster transformer?

1230


How you will determine the volume of oil in a particular Distribution transformer.

1044


The simple way of finding the leakage quantity and % in compressed air distribution system

796


What are the common sources of energy?

237


how synchronous condenser is used in place of synchronous generator with out negotiating IEEE standards? Can i use 3 generators as synchronous generators and 2 generators as a synchronous condensers in an IEEE 14 bus system with out disturbing the standards?

1258


What it the purpose of parallel phasing transfomers??

1108