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 is the principle of synchronous motors?

The Grand,

3 5468

what are advantage and disadvantage of hvdc transmission . please tell us technic of hvdc technology

2 6002

What is the application of Nitrogen Injection system in Transformer Protection?

HPL,

1 6127

what is T P N bus bar

1 18039

examples of resistive inductive and capacitive load

1 16496

Explain What will happen when direction of field current is changed (i.e, field excitation is reversed) in the following machines? 1) Alternator 2) Synchronous Motor 3) D.C Generator ( Shunt or Seies ) 4) D.C Motor ( Shunt or Seies )

NTPC, Transco,

3 18108

what is mean by hvdc transmission technology .what is principle of hvdc transmission and technic of hvddc transmission .

1 4665

what is the prinsiple of dc motor and construction and working ,application of dc motor.

1957

what is the relation between the leading pf and supply voltage?

1 4373

What is the major differences between RCCB & ELCB? If we use ELCB of less sensitivity why does it trip often and can we control it from tripping?

1 6701

In ac circuit R,L,C are connected in series what is the output the circuit? explain

4 6294

string efficient is 100% what is the voltage across the each disk?

1 3606

( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capacitor current would be kvar x 1000 / (415 x sqrt3). This would be 70a approx. The MCCB selected should have *atleast 1.4 times this current i.e. 1.4 x 70= 98. So you should choose at least 100 A mccb.) regarding to this answer,i would like to know why the current have to times 1.4 to get the right amphere for the mccb.hows the formula to get the 1.4??tq

2 12238

Shall I use 40A semiconductor Fuses in 32 A SFU ? Frame size is same. What Happen if Fuses burn on SFU?

2121

What is the starting current of a DC Motor?

2 4713

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Un-Answered Questions { Electrical Engineering }

Which level of the Transformer oil got dielectric strengh? And why?

2250

how to determine motor size for a fan application?

2293

what is the formula for calculating the phase clerance between two phases and phase to earth how to calculate the cable for a motor

2020

any earth foult trip the relay but in welding time not trip by earth foult

3178

If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.

1632

Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?

1255

what is the function of Moulded case circuit breaker, why it is called Moulded?

1550

Difference between megger test equipment and contact resistance meter test instruments?

1324

what are the types of electromagnetic forces developed in practical transformer?

2632

What magnetic circuit is formed in berry-type constructions and why?

1068

what is a pilot wiring and whys that called a pilot wiers

1924

how to calculate voltage drop and followed by cable calculation?is there avail in formula?

2068

Do you know what is dry-out test in x'mer

2651

what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV

2185

WHAT IS VCB SAFETY

1252

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