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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why AC voltage source are generate as 50 Hz ?

4 6606

What will happen if induction motor is supplied with capacitive load?

NTPC,

1 5397

how we identify between current transformer and potential transformer without having it name plate?

L&T, TATA,

5 12824

Please give the formula for converting from 1 tr refrigeration to kw.

Bugema University,

2 4636

what is settable hystersis protection? If any body knows plz kindly post the answer..

2057

what is the formula for computing cable tray size & capacity

2168

what clearance required for 4.5 mva dry type transformer?

SPS,

2031

how to calculate lighting for a room

Coca Cola,

2 7704

How can we select suitable capacity generator for three phase load (inductive load) and how to take study analysis in 3 three phase load system ?

2150

A group of machines (wind turbines) connected with 33KV feeder and each machines are having individual VCB. The 33KV feeder connected with 110KV/33KV substation. The 33KV feeder tripped by over current at Substation and fault recorded at Substation as OC-R&Y phase. Same time the group of machines VCB tripped by over voltage, the fault recorded voltage was above 66KV by numerical Under/Over voltage relay. While grid drop time, this much of voltage hike is possible?

1 3420

method to check earthing

ECC,

5 11859

why slipring motor , at full speed run as squirrel cage motor?

1 4144

I have running 4 generator in paralel.All generators Voltages is same(470 V),KW also same (100 KW) but only No2 generator Amper is high than another generators. DG No:1,3,4 470V,100KW, 150 A DG No:2 470V,100KW,400 A

4 5609

What is the permissible value of earth resistance and as per which standard / act / rule ?

HBL Power Systems,

3 7104

The loads are connected with phase and ground then why current flow as the loads ?

1966

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Un-Answered Questions { Electrical Engineering }

How to calculate mf when meter equipment and meter are connected

1734

What is the diff. between single compression and double compression gland

1997

While testing LA mast,What are the parameter limits ?

1902

what is the current setting for different relay protection for transformer .

2308

how can we select the appropriate VCB ?

2321

What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?

2080

What are motor generator sets and explain the different ways the motor generator set can be used ?

1170

What is principle of Floroscent tube 36watt.

2047

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

2290

What id difference between power and energy?

1350

Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards

2112

what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value

2190

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

1518

how slip power recovery system work

3027

what are the dimensions for 200 kva transformer plinth (plateform),in which pcc m20 is used..

11711

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