Electrical Engineering Interview Questions
Questions Answers Views Company eMail

who is make controlling in the reactive power that genarted in AS genrator(the exitaion currnt or exitation voltge)

2 3314

do you have some of interview Questions in power and genrator section in general whith answers

1610

why we are using the ac supply in domestic purpose, why don't use dc supply.

5 6416

transform oil how going to act like ainsulation purpose

Siemens,

1 3278

What is principal to reduce earth leakage current with isolation transformer? When isolation transformer is installed in input stage of system, earth leakage current is reduced. the reason is why the leakage current of 2nd stage of isolation transformer does not affect the 1st stage's leakage current. I would like to know the reason. As you know, earth leakage current is a kind of AC. So, How to reduce earth leakage current in case that isolation transformer is used?

2 9382

what is difference of electrical and electronics

SSIL,

6 5806

why we are using the ac supply in domestic purpose why don't use dc supply

Airtel, SSIL,

6 14611

we are operationing 3NOs 800 Kva generators by singronyus.specialey evening time our panel trip. the panel showing generator earth fault

RRB,

4 5489

star delta starter single line digram

1 6047

in transfomer which type of oil is use!

Essar,

9 8921

What are the protections required in the main lt panel which is connected to the transformer.

Ispat,

1 2245

what is the difference between ac drives and dc drives?

1 3177

Why is DC use instead of AC for protection and control circuits?

4 7318

What is the difference between Earth and Neutral?

2 4603

why there is a humming noise in transformer

6 6906


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Un-Answered Questions { Electrical Engineering }

Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A

2535


how to find ratio of CT & PT in 66/11kv 12 mva supply system ? explain with calculation.

1851


If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.

1128


What is difference between Harmonic and Non harmonic Capacitor Bank?

2363


What is a diode?

601






how you configure motorvision relay (L&T make)from DCS

4306


for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.

2121


why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?

1089


why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points

1591


Salient pole alternator is more stable, why?

2055


What is signal flow graph?

631


WHAT WOULD BE THE FORMULA OF WIRE GAUGE FOR A FULL LOAD CURRENT

1660


In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.

1570


Ratings of power transformer,Distribution transformer.

1069


What is the source of dependent source ?

1403