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 is Grounding?

2 5159

how u change the vector group of a transformer like DYN1 to ynd11

2 5988

What are the types of circuit breakers ?

Genco, Super Max,

6 8431

Merits & Demarits of Oil circuit & Air circuit breakers ?

Genco,

2038

Two CTs 1600/1 and 35/1 are in series. while checking the ratio test of a CT(1600/1),same 1600A will also pass through the CT having ratio 35/1. Will it be harmfull to the ct(35/1),if yes , what will happen.CT secondary is shorted

3 7104

what is the function of Droop CT and where it is used?

Lanco,

3 35124

In supply RYB are mentioned. But in transformers, why they are mentioning XYZ?

3 16703

Can we use all 3 cores of a cable to connect DC motor + ve terminal and similarly one more cable for - ve terminal.

2 3986

pls define kvarh

2 6137

What is Grounding? any difference b\w earthing? if yes plz explan??

ABB,

3 7719

What is HVAC, PLS SEND DETAIL OF hvac.

6 8373

WHAT TYPES OF OIL(STRUCTURE) ARE USED IN POWER TRANSFORMER INSULATION?

4 6517

why neutral and body earthing of transformers kept separated? what is distance between two is required as per is?

6 28858

what is the pperating squvance in transmission line for circuit braker, isolater & earthing switch.

2 4621

what will happen if i connect or change line with phase terminal

1 3541

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Un-Answered Questions { Electrical Engineering }

Draw the vector diagramme for Asynchronous Induction Generator at noload,half load and fullload.

1932

What do you mean by screen of power cables?

1740

what is the usage of microcontroller in the panel board?

2045

A TRANSFORMER 440/400V,DELTA/STAR CONNECTED.THE NEUTRAL CONNECTED WITH GROUND CABLE THAT IS DIRECTLY CONNECTED TO THE PANEL,FROM PANEL IT IS CONNECTED EARTH PIT.IS IT RIGHT? IF IT IS RIGHT LEAKAGE CURRENT AFFECTED.SECONDATY IS PROTECTED WITH EARTH LEAKAGE RELAY.

2073

why transformer tank is in rectangular shape what happen when it is in step shape

1406

r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā

1673

i have applied for junior engineer 2 c&w for Guwahati RRB please send me last five year question paper

2129

I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

1781

What type of pipe material G.I or M.S is used for sprinkler system?

9142

how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids

1859

concept of busbar and load dispatching..?

2381

why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?

1464

how much leakage current is allowed in MC61A L&T make relay?

3618

Explain Continuous and Discrete signals?

1675

what is the isolation transformer. what is the isolator?

2033

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