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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

for distribution line ratio of x/r 1.<0.1 2.>10 3.>1 4.<0.01

HAL, HPPSC,

3 21195

why any inductive load need free wheeling diode?

Essar,

4 8851

how to decide choke rating for drive?

Reliance,

2320

DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?

Essar, MahaGenco,

2614

IN bateery size of positive is biger than negative .why?

Power Grid,

8 12584

what happen when ac motor is connected with dc current

4 8446

what is the difference between inrush curent and jurk load.

2 12761

what is the pi test for current transformer?

1 7887

wat is the difference between real power and reactive power..which is useful..?and how it s useful..wat is the effect of these on a power system...

ABB,

10 24307

why AC signals are represented by sinusoidal waveform?WHY other waveforms not used for representation

4 8783

What is ONAN/ONAF1/ONAF2 for transformer cooling

5 64852

In tranformer winding Connection Like Dyn1 ,so LV lags Hv by 30 deg and Dyn11 LV lead HV by 30,so how do this lagging and leading afffect the transformer??

Siemens,

2 6711

what is the use of Antipumping in HT breakers.

9 23706

like the transformer another electrical static device which operate on same priencipal?

Power Grid, Vishal Transformers,

13 19346

Differance between ELCB and RCCB?

8 13718


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

How vfd saving power.

2027


how to select the mpcbs and contactor for 3 phase 30 hp star delta motors.for plc control.and tell me the calaculation for future use.

1970


What is s-domain and its significance?

1180


What is the necessary and sufficient condition for stability.

1130


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

2069


give single line diagram of D.G distribution form alternator to main L.T panel?

7560


what is the use of the circle diagram

5609


TCS IS IT COMPANY THEN WHY DO THEY NEED ELECTRICAL &ELECTRONICS ENGINEERS?

1941


how to select the double earth conductor if 21A full load?

2068


can any one tell in easy method for circulating current ??

2167


How to discuss the phase shift of transformer considering open delta?

1467


What is the role of feedback in a closed loop control system?

1082


What are the basic properties of signal flow graph?

1213


Why synchorised generators are used for the production of electricity?

1186


for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?

1964