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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why the TNC switch is called as Memory switch

Reliance,

1 3315

how to understand the controling circuits example star- delta-starter controling daigram please let me know

GMR,

3 7223

how many earthing should give for transformer body and nuetral

GMR, GOMS,

5 7832

i am electrical and elctronics engg passed out in 2009 want to attend for reliance placements.plz send me apttitude ,technical and hr question answers to my mail plz. my mail id-kat.bindas@gmail.com

 1553

Is C.T will sense the current in both direction. As i know the C.T will sense the current in only one direction.

 2 4979

What is the diffrence (Technical & Construction ) between CBCT & Normal CT?

 1545

Why the cost of CT increases with the decreasing of its CT Ratio (Technical Reason)?

Vedanta,

2 5025

How the size of transformer decreases if we increases the frequency?

 2 4471

Can we use delta-star neutral grounded 3 phase power transformer bi-directionally.

GMR,

2 4591

how to synchronize 3 phase slip ring induction motors of different ratings.

GMR,

1779

can we use existing delta star with neutral grounded,step down(6.6kV/415V), 3 phase power transformer bi-directionally.

GMR,

3 4988

1.differance between onload ups and off line ups.

CTS,

1 5062

want happens when a dc is given to a commutator

 2 3894

A three phase transformer 460v primary 220v secondary (three phase four wire system.) Why did we get 460 volts across the neutral on the secondary side?

 3 5601

I have 12MW gas engine based power plant its running parallel with grid. my problem is When cpp run in island mode(without geb) that time geb transformer power factor is 0.2 lagging. When cpp run with parallel that time power factor is 0.94 lagging So how can i maintain power factor ofgeb transformer in island mode 0.9 lagging?

SPCL,

1 2053

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Un-Answered Questions { Electrical Engineering }

is it necessary to earth the rmu before cutting off the transformer winding?if yes why?

1464

How to select the gauge of wire for winding of motors? How to select number of turns for winding of three phase induction motor?

2232

what is the difference between linear choke and suction choke?

2171

hi if anybody got model questions for cpcl Grade'A' electrical engineer position.send it to my mail please krishkumar22@gmail.com

1472

What is method of calculating the fault current for a MDB, 50KW, 3PH, 415V, 50HZ?

1687




is there any phase difference occurs while primary and secondary side mutual induction occurs?

1515

how to calculate the formula of cable size if motor kw is given

1678

standard earthing rating for power line..

1661

What is the equivalent circuit of a transformer and its vector diagram?

2157

hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.

1532

While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

3051

how to test and calculat the head and discharge in borewell compressor

1693

is it possible to start a motor in felid connected to a remote mcc

1406

In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?

1717

how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

1397

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