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 will be cross section area of copper conductor for carry 2000 amps & 2500 amps....sq.mm.?/

3 7343

why dose not transformer not rotate ?

3 5907

Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MVA, Areva make transformer. Why ?

7 11648

In transformer how measure the winding temperature ?

5 24072

What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????

2004

Why colled 440V to 3-phase supply.

2219

Why indicated only R.Y.B to phase.

Bhel,

6 11685

what happen when transformer connect on dc supply.

5 9898

What happen when increese more than 50HZ fequincy.

5 8795

what is the relation between currebt & voltage.

8 9804

Where burned of electricity,when,who, & why.

NIGP,

2020

what happen when increase or decrease size of lamp,light.glass.

1963

Why Two Transformers aside shoud be supperated by concreted wall?

5 16036

what is the difference between potential Transformers and capacitive voltage transfoemers and where it is used?

5 13616

Explain the experiment on ward leonard method of speed control of a dc shunt motor.

2 12342

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Un-Answered Questions { Electrical Engineering }

how did the testing of protection relays done through current injection

2140

what is the main difference between power devices and signal devices

2230

how many types are their in switchyard or substation(like D,I TYPE), what is differant between them

2169

a simple c++ program to calculate simple interst with its data members as private

1917

WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.

2117

how is positive, negative, zero sequence is happen.. how is effect on 3 phase system

1846

How DC earth leakage currents can be reduced ?

1967

What are the material used for inductance coil?

1182

do we use links in a dc circuit?if so what s its use in it?

2066

ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

2076

What is the formula to calculate the no load current of a single & three phase induction motor

2332

Where burned of electricity,when,who, & why.

2020

What is stacking factor? What is its approximate value?

1537

What is the range of the stator resistance of 3 phase induction motor?

1951

how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.

3434

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