Electrical Engineering Interview Questions

how to design coil turns ?

L&T,

741

how to calculate magnetic force genrated by a coil ?

L&T,

926

what is method of dc current measurement

5391

How much energy save vfd if motor run on 50 Hz (full speed)

2554

How to Decide(calculate) Bush bar size for copper and aluminiam ?

957

why knee point voltage should be high in Ct for differential protection

NTPC,

3748

what are the difference between protection class CT and Class PS CT

23708

WHAT IS DC COMPONENT IN CIRCUIT BREAKER?

15720

How to calculate HT XLPE CABLE for 11 kv / 433 v , 1500 kva oil type transformer system? plz provide step by step calculation

96532

Hi friends. m 3 years drop. now d company asks in d interview d reason 4 my drop.what shud b d probable answers 4 that which may not put a negative impression.

2532

why we use star connection on the primary side of a transformer?

DRDO, TCE,

12101

what is meant by a slip?

8320

why transformer is conneted to dc for polarity test.it doesnt work in dc?

ABB, KVPY,

5100

What differance between Circuit brekar and Isolater?

TATA,

13605

WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES?

6874

Un-Answered Questions { Electrical Engineering }

Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?

1041

is it possible to test of bus bar in high rise building without completed full floor ?

427

when will be the iocl interview results i faced interview on 8th september 2008 iam from electrical branch i faced interview for the post of electrical engineer??????????????????????//

898

In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)

451

hi i will D.E.E.E.is completed pls send rrb diploma old qustion papaer sent in my e mail. i.d.

1075

How will polarity test of Dy5 Transformer ?

998

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

803

What kind of maintenance is conducted for Transformer

944

FEINGING DECREASES THE FLUX DENSITY IN THE AIR GAP. HOW?

821

What is the formula to calculate distribution transformer De-rating on iron losses basis

656

which type of effect of turbine and generator reverse power protection ?

2961

what is the difference between interconnection and intraconnections in the circuit diagrams

5643

Why 11kv to be generated in generation station

503

Write down the brushes of a de machine.

731

- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

1486