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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 17767

why any inductive load need free wheeling diode?

Essar,

4 6155

how to decide choke rating for drive?

Reliance,

1436

DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?

Essar, MahaGenco,

1427

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

Power Grid,

8 7936

what happen when ac motor is connected with dc current

4 5496

what is the difference between inrush curent and jurk load.

2 7053

what is the pi test for current transformer?

1 6534

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 18380

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

4 5983

What is ONAN/ONAF1/ONAF2 for transformer cooling

5 52437

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 4544

what is the use of Antipumping in HT breakers.

9 19339

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

Power Grid, Vishal Transformers,

13 12446

Differance between ELCB and RCCB?

8 9380


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Un-Answered Questions { Electrical Engineering }

The principle of switching circuits for different types of batteries in application of storage systems

1116


In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.

1132


what is auto re-closer?

1491


I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is likerahulworld@gmail.com

972


in non technical way how can u define POWER FACTOR??

958






regarding safety what would u consider the most important rules to observe when inspecting electrical equipment?

1069


why 15 kw motor winding resistance is low then 5 kw motor winding resistance?

1503


What is the formula for calculating no-load current?

195


what is meaning of sympathetic tripping with respect to relays and give the values for current carrying capacities for copper and aluminium cables from 16sq mm to 500sq mm

3697


Mention the difference between Analogue and Digital circuit?

232


what is the Earth Voltages in Power Plants, Sub-stations, Industries, Residential & Commercial Buildings.

1216


Can anybody inform me about the pattern of ECIL GET( Graduate Engineers Trainee) interview for Electrical students? Will there be HR round as well? I thought of preparing for 2 to 3 subjects thoroughly. Will it be sufficient? Please share your thoughts.

1299


what is there inside an inverter and how it works?

829


HOW TO WRITE A QUENTION ANSWER? I MEAN SHORT OR LENGHTHY ? OR FROM THE BOOK AS BOOK..... SOME TIME WE GIVE A ANS FROM THE BOOK AS LIKE BOOK ND WE GET MINIMUM 60% MARKS OR MORE THEN....... THEN HOW TO FILL THE Q-PAPER?

1035


What is Plank's Law?

246