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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Just a silly question but just to make my curious mind bac to normal - Why was not 67 and 67N relays built into a single relay as i have noticed that the R,Y,B CT wiring end up into the 67 relay while the common of the R,Y,B CT wiring end up into the 67N relay. Then it was better if a single relay was manufactured just like the distance relay (21). Another question i would like to ask is - how do we know where the 67 and 67 N relay has to be placed.why is it not placed at the transformer bay? In the substaion that i am working -i have noticed that it is placed between a breaker and a common double bus bar and this line bay is connected to another substation at a remote place which is furthur connected to a load. B U S______CT for 67 & 67N ______Breaker _____ remot s/s. B A R

1 3587

What should be the minimum depth of ground laid 66 kv ht cable?

L&T,

3 7977

IS THE ANY DIFFERENCE B/W GENERATORS & ALTERNATORS

6 8710

what should be the value of proper neutral earthing resistance?

ABC,

3 7888

what is the minimum distance between substation wall and LT panel outer surface?

L&T,

3 12614

what is the IS foe lightning arrester?

2126

How to calculate the Meter constant for the given Meter (by using any formula)

HCL, Viva,

4 77999

What is the difference between a Vacuum Circuit Breaker and a Load Break Switch?

7 28458

Which motor is suitable for mixer grinders.

12 24396

what is earthing/

B.Tech, CPCL, Mobiserv,

3 6179

what is the use of earthing?

CPCL,

1 5516

why we provided electrical earthing?

CPCL,

5 9301

explain the details about vaccum circut breaker and advantages?

CPCL, Unisol,

4 7379

Car battery + terminal allways biger than - terminal! Why?

2 4917

why commutator is attached with only dc macine

ONGC,

8 13029

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Un-Answered Questions { Electrical Engineering }

what is meant by rotating magnetic filed

2009

What is CCM in Electrical ? where can we use this material?

1416

Can i replace Earth leakage relay to the faulty Earth Faulty Relay

1484

WHAT IS THE MEANING OF BALANCED / UNBALANCED IN STABILIZER TYPES.

2604

Where voltage are high and current to be interrupted is low the breaker preferred is:

2239

sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me

1904

What is the approximate value of stacking factor?

1119

please send me the L&T Emb. sys. placement papers and entire details of pattren

2290

PLZ sent the previous year question paper for GET in NHPC on my EMail id ppshanker@gmail.com

5389

why chock were used in old tubelights but are not newest tubelights?

1902

Explain the term parallel path in dc machin ?

2154

If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?

2152

Please define ohm’s law for a.c (alternating current)?

1033

How to calculate the efficiency of Turbo Generator(Alternator) in general....?

2825

Why efficiency in thermal power plant is low?

1073

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