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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

how do we calculate contactor and fuse rating for a motor if its full load current is known,i want exact calculation for 1.5 kw motor????

Allied Group, Nucon,

1 5898

what is the difference between 2 way and 4 pole selector switch???

Allied Group,

2443

how to calculate 'In'in a system?

2 4208

what are the importance of earthing?list different types of earthing.

1 5327

Why only 1 CVT in Y-phase is used for synchronization in 3 phase power system?

Reliance,

1 5946

What is the causes Power Factor become leading and what is the effect of Electrical system ?

2 4596

It is a three inch fan and i want it to rotate to other direction .I've tried cutting the wire and reconnecting them inverse like black to white and white to black ,but it won't start rotating when i plug it in that way.And then it works again when i rejoin the wire to the way it is. I don't know what causing the problem.Is there anyone familiar with these small mortor?Any suggestion would be appreciated.Thanks!! http://i296.photobucket.com/albums/mm163/sasukebloodwheel/110527-105859.jpg

2 3890

what is the pressure in side transformer under normal condition?

1 3644

What is SFU ?

4 7754

What is the difference between line Distance protection and Line Earth Fault Protection?

1 3965

how will you find out the fuse failure by remote operation?

1 3725

what is the purpose of using semiconductors in HT cables

Sterling,

3 23214

What is the fullform of IPS in substaion using Aluminium Tubes

L&T,

15 61913

Pl. brief about break-down maintenance of machine tool.

1801

How to Prepare preventive maintenance shedule of machine tool.

Concast,

2021

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Un-Answered Questions { Electrical Engineering }

FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

3403

how is calculated the quantity of weight in hot test xlpe?

2514

Why magnetic flux produces an induced current?? what is the detailed procedure ?? ans plz

3923

various transmission tower like .,D tower ,K.C.O tower ,C.C.O tower,K.C.R tower ,C.C.R tower ,H.C.O tower in different tons.

3306

Can you explain about pole discrepancy scheme

2182

Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss

3278

why the projects getting loss?

1942

How stabilizer works??

2121

HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?

2118

why starting current is high and resistance is almost 0 during the starting of motor dc motor...?

1734

1.dg on load alarm/stop alarm... 2.dg on load. piu alarm alarm kaise chek krte hai

1938

What is meant by reset level of the relay?

1212

What is the most essential condition for the voltage build up for a d.c. Shunt generator?

1151

1.what is the reason for transformer and lightning arrester blast in 33kv system

3093

State nyquist stability criterion.

1175

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