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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.

Bajaj,

2056

what is vA rating and class of a ct.

L&T,

1815

what is the ka rating of mccb. and how it is decided .

Napino,

3 6558

WHAT IS THE DIFFERENCE BETWEEN UNDERVOLTAGE COIL, CLOSING COIL AND SHUNT TRIP COIL OF AN ACB?

Alstom,

2 40267

why to use freewheeling diode ( diode in revers bias mode) across dc coil

2 4910

What is A check, B check, C Check & D check for a diesel Generat

Jtekt Koyo Bearings,

2075

In Megger which types of test we can do ? and How it works? How to use?

Power Grid,

3 6500

what precautions to be taken while desigining a LT,HT panel. Eg-LT panel PCC panel with ACB installed. HT panel VCB panel with VCB installed. & what is main diffrence betwn IP54 & IP55 construction of panel.

Bhel,

2994

what is motor contrl center .

3 5115

difference between temperature sensor and temperature switch

ABB,

3 9277

Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?

1935

Whats changes in Transformer Oil BDV in changes in temp or Climate?

TATA,

2 6232

why the electrical plug point pin(earth) size in max

Autoneum Nittoku, Bajaj,

1 5199

what is dedicated earthing

Apollo Power, Student,

2 11262

how do you select the ct/pt rating in substation

Apollo, Shreem Electric Ltd, Tata Motors,

1 7628

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Un-Answered Questions { Electrical Engineering }

what is errection pcbs?

1873

Transmission through a short line depends on

2204

is it possible for different brand of H.V transformers to run or operate in parallel to each other? if so how much disturbance can this affact the H.V bus bar?

2088

hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?

1874

How to convert 2 phase to 3 phase electricpower in induction moter?

2066

State thevenintheorem?

1021

how oltc works in rectiformers of higher rating (27 mva,200v dc,120kamps) please provide me full information with diaggram.

2092

State kirchoff current law?

1036

What is meant by Load Encroachment in OHL Feeder Protection?

3566

What is the maximum percentage voltage drop (vd%)for a motor control center

1975

if any house we instaled a 1.5 ton ac and its phase cable of wiring is installed but netrual cable of wiring not instaed. my question is that is neutual of house(for other wiring is capable for ac load or a sepeart neutrual wiring required

2429

why booster transformer is used in sumpners test conducted on transformer????

3529

what's the exact magnitude of current, flows through Neutral?

1918

what is laser diodes?

1116

What is the formula for calculating the Instantaneous Short Circuit & overcurrent for any breaker

1950

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