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 do you mean by isolators and circuit breakers?

Bhushan Power Steel,

6 19402

explain all the classes with example

1963

how to calculate micom relay earth falt time and current sertting

2496

why DOL starter is use in induction motor as it is not reduce the starting torque

Maruti Suzuki,

2 7046

Dsitrubution transformer minimum IR value

1 4277

advantage of using 110v than 230v

NTPC,

1 6079

3 ph motor connected in star delta starter. when we start the motor it run in star but when in is going in delta it trips the main incoming supply. why?

Bajaj Hindusthan,

3 10279

In 63kva LT Distribution Box Why the outgoing of 63A kit kat is connected to 200 A link disconnector? as the output of kit kat is only 63 A?

Godrej, Patel,

1 4305

the fuse is use for protection against overcurrent but at normal condition it carry the rated current then how single thin wire carry this current without melting

1 4056

why rating of transformer is in kva instead of kw?

3 5943

what is inverter

Bhel,

12 15200

Dear Sir how much cable size required from 0.75 kw to 50 kw for electric motor or pump

1 6168

We are getting supply at33kvand it stepdown to 11kv.So Our requirement is 11kv voltage.why we draw 33kv from the grid instead of 11kv?

Birla,

2 5188

Why transformer ratings in KVA not in KW?

ABB,

6 10518

We store the d.c supply...then why can't we store A.c supply???

4 9079

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Un-Answered Questions { Electrical Engineering }

What is the working principle of MIG welding? and its out put Voltage?

3315

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1846

I want to know the 'Test voltage' for Tandelta testing of 3.3 / 6.6 / 11 KV Motors. Please explain

2265

description about dry type transformers

1895

what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

2037

what is the meaning of 5% droop or 7% droop in AVR?

2324

WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC

1895

What is the difference between Static and servo controlled voltage stablizer?

2181

why ct's&pt'S out put called as burden,why compelsary short ckt the secondary of ct's while removing the burden?

2266

Convert a star connected network into a delta connected network.

1118

What are the roles and responsibilities of electrical engineer in cement plant

2031

HOW WE KNOW IN PHYSICALLY THE CONTACT SURFACE OF A VACUUM INTERRUPTER IS GOOD OR GOING TO DAMAGE IN A VCB AFTER ABOVE 500 TIMES OPERATED.

2052

What is the effect of solar radiation on the design of an Isolated Phase Busduct?

2362

we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer

1739

the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?

2278

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