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 14791

why any inductive load need free wheeling diode?

Essar,

4 5113

how to decide choke rating for drive?

Reliance,

1036




DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?

MahaGenco, Essar,

1004

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

Power Grid,

8 6490

what happen when ac motor is connected with dc current

4 4571

what is the difference between inrush curent and jurk load.

2 5139

what is the pi test for current transformer?

1 6053




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 16539

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

4 4965

What is ONAN/ONAF1/ONAF2 for transformer cooling

5 47976

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 3777

what is the use of Antipumping in HT breakers.

9 17610

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

Power Grid, Vishal Transformers,

13 10360

Differance between ELCB and RCCB?

8 8002


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Un-Answered Questions { Electrical Engineering }

What is PEC??Applications........

703


What is difference between YNyn0 and YNyn ??

614


rajha power sector details

756


can i use the six sigma method which is used in management area, in state estimation of power systems?

631


my project load is 6 MW so please suggest the size of cable.. ALU 3c 400 aqmm cable can be sufficient.. is there any thumb rule for calculation of cable size please help me

425






The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?

646


Why earthing is necessary for any equipment?

366


How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors

484


What is the criteria that generally follow by distribution licenses to fix contact demand of their industrial customers?

398


defination of controlled shunt reactor

1050


Generator,motor and alternator Working principal Please explain easily

197


how is the incoming cable size calculated for a given current rating of a panel??

647


how to calculate slip ring induction motor stator and rotor currents??

785


in india per day how much power is generated including all power station

645


I have experienced electrical maintenance HT ,but I completed be ECE ....can I apply c license or not ???? Pls help me friend s...

344