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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the difference between air & vaccum circuit breakers?

IOCL,

2 6814

What are the components of a substation?

IOCL,

3 6572

What is ELCB?

Bhel, CDS, IOCL,

9 14166

How voltage step down is done?

IOCL,

3 6248

How does a 3 phase induction motor is started?

IOCL,

3 7376

can anyone tel me what is competency of electrical supervisor??

ONGC,

2 4846

minimu size and length of gi earth pipe

2 4845

we have consol make 3 phase servo stabilizer for cnc m/c. while installing the earth neutral voltage is 1.7 volts at stbilizer off condition and when stabilizer get on en voltage reaches 4.8 volts (new earthing is done and neutral is helthy condition all phase to neutral volts 440,442,441 v)why this happen.solution for cause.

3 7111

how to calculate the over current rating of 3phase motor

2 6943

why sec of ct should be kept shorted

Enercon,

2 6424

difference between isolator and circuit breaker?????

Enercon,

7 13562

how to improve IR value in HT motors?

ABB, AMW, Macleods,

3 17579

Why we are using air gap magnetic condutors

Ford, IOCL,

2 6757

I want to know how to calculate the size of electricity cable in building?

DR Engineering Services,

2015

whether Transformer is singly excited or doubly excited machine?

2 9286


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

In parallel operation time both NGR’s close or not close if both close what will happen

3731


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

2068


what is the ground fault relay,which purpose it will be use,clearly tell me plz

2077


Can a generator runs after getting 1st stator earth fault.

1409


what is difference between elr and R eartl realy.

2634


HOW TO CALLICULATE RESITENCE,REACTANCE AND IMPEDENCE VOLTGE OF TRANSFORMER 13.33 KVA 144/240 VOLTS 93/56 A WITH FORMULA

1978


We have studied about many techniques for finding the stability of system, ROOT LOCUS, ROUTH, BODE PLOT, POLER PLOT etc. In these which is used where. what are the difference among them... PLZ tell me.......

2179


What is a feedback in control system?

1215


if i get a drop in my 1st year and the i clear my 2nd year and 3rd year all clear and i dont have any back logs so can i be able to sit in campus selection??

1854


how to calculate the step resistance for slipring induction motor,how you deside the no of step for that?

2238


Explain the operation carried out in thermal power stations?

1036


why we use single core 630mm2 cable for transformer secondary side

927


Explain the operation principle, advantages and disadvantages of the following converters: a) A 12 pulse converter b) A Switch-mode inverter c) A thyristor inverter

2054


is there any phase difference occurs while primary and secondary side mutual induction occurs?

2017


what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

1675