Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how the harmonics are generated in transforemer?

IFFCO,

5 6459

What are the voltage values for LT,HT,EHT and other voltages??

MNC, INEL,

22 71694

Where there is voltage,there must be current.Is this right or wrong??

10 4878




what is the function and use of oil filled cables specify its advantages and disadvantages

Alstom,

7 18531

what type of cables exsisting in the world and how many types

Alstom,

9 6793

what is the difference between LATCH and FLIP FLOP

Wipro,

4 3792

what is resistor

9 4526

what is ground fault current? is there any current flow takes place through ground? is it possible? if it's possible whether it affect human beings on earth near the fault or not?

2 3630




WHAT HAPPEN IF GENERATOR TURBINE IF TRIP?

CEERI,

7 24624

EARTH AND NEUTRAL ARE JOINTED OR NOT?

7 6658

In neutral the current will flow or not?

17 26902

why series motor cannot be started on no-load?

6 18626

AT THE TIME OF INSTALLING THE POWER PLANT POWER IS TAKEN FROM NEARBY GRID AND GIVING THE SUPPLY TO THE GENERATOR WHICH ACTS AS MOTOR. WHAT IS THE NEED OF RUNNING THE GENERATOR AS MOTOR?

6 3705

why ELCB can't work if N input of ELCB do not connect to ground?

5 20323

Why in a three pin plug the earth pin is thicker and longer than the other pins?

NTPC, LG,

17 39745


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Un-Answered Questions { Electrical Engineering }

What is the ratio of Booster transformer?

867


EXPLAIN METOD OF IMAGE OF TRANSMISSION LINE/ WHAT ARE ITS PRACTICAL APPLICATION?

684


How to check the LM324 Ic

6346


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating

960


As we know induction squirrel cage motor torque Directly praprortinal to applied voltage in star connection & delta also. If I connect 55KW Motor to DOL starter in load condition does motor withstand the load & what will be the current withdrawn ? motor will not fail ?

687






3 pahase 750kva Running 2 DG sets in 35 mints.525ampers. and 616 kw how much fuel consumption in Generator.what is the formula.

606


we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

924


How relay works, reverse relay, master relay, os relay, earth fault relay and what is its setting point

378


What is the de rating factor of cable? What is the importance of the de rating factor in cable select

1072


bitumar

788


For the requirement of a furnace of temperature range up to 1200 oC using silicon carbide rods, What is the required rate of transformer needed (please do it with all details)?

779


Why we use auxillary relay ? what is function of differential relay, directional o/c relay?

788


sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers

783


if two transformers are placed parallel & both have fault impedance of 50KA will it increase or decrease show example?

711


what is the difference between gas group b and gas group c electrical equipment construction wise?

668