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Electrical Engineering Interview Questions
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how to extend relay operating timing in 24V dc relay card (without using Timer )

 1454

what is meant by PU value ? anyone can you explain briefly to me ?

 3 4226

need help, please can someone tell me how can i calculate the main breaker and branches breakers to distribution panels (MDB) depending on the load ampere .. i really need it but can't find any site >>

 3 3478

What is maximum permissible length of cable from transformer (33kV/0.433kV) HT side to HT panel which contain VCB? In which standard i shall get this information.

MSEB,

6 14606

Which motor has more efficiency ;Synchoronous or Induction motor ?

TATA,

4 6947

What happens when the power factor is leading and its disadvantages.

 1 2978

What is the basic difference between 90% stator earth fault and 100% stator earth fault, and its phenmenona?

Reliance,

4 18038

purpose of breaker contact multiplication relay?

ABB,

5 23370

if two heater of rating 1KW,200v are connected in series 100v supply what will be the power taken

1 4018

write a program that prints prime numbers from 1-20 in digonal form

 1516

What will be done if we open the secondary of CT on load??

Engro,

4 5191

what is the transiant condition in alternator? and how it can be prevanted?

 1495

i alternator which of genarator used for excitor the what is reason?

 3 3671

Hi.I want to ask how to calculate contactor rating current? for example I have 460 V , 100 A (induction motor) calculate contactor rating current?

2 3581

I want to know what must the CT ratio be on a load of 300A is a 3PH nutral to earh installation?

 4 4680

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Un-Answered Questions { Electrical Engineering }

one electromagnet is called

1420

difference bewteen reverse current and alternating current

1681

Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

1566

What is the power requirement of tamil nadu for one month?

1556

What is the meaning of 40X8X2 busbar dimensions for carring load of 400 Amps

1573




I have 440v power coming to facility,( not being used ) can I buy large generator, (gas) to sell power back to electrical co.

2015

how to calculation increase power factor for single phase

1815

Why is back emf used for a DC motor? Highlight its significance.

693

how works inductive &capacitive sensors?

1530

Explain the iniluencc of short circuit ratio on the pert'orniancc of synchronous machine.

1702

state the working of discharge lamp?

1563

If only R Phase is connected in 2 pole elcb, n is not connected than it will work or not in ground fault.

983

How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

1706

How Load Factor, Demand Factor, Diversity Factor etc best applied in designing an electrical circuit? Is it allowed to consider these factors in each and every panel in an electrical distribution system? Can any body suggest a good book for reference?

2454

define as synchronous generator

1684

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