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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the difference between air & vaccum circuit breakers?

IOCL,

2 6730

What are the components of a substation?

IOCL,

3 6430

What is ELCB?

Bhel, CDS, IOCL,

9 13889

How voltage step down is done?

IOCL,

3 6139

How does a 3 phase induction motor is started?

IOCL,

3 7259

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

ONGC,

2 4763

minimu size and length of gi earth pipe

2 4757

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 6982

how to calculate the over current rating of 3phase motor

2 6840

why sec of ct should be kept shorted

Enercon,

2 6292

difference between isolator and circuit breaker?????

Enercon,

7 13339

how to improve IR value in HT motors?

ABB, AMW, Macleods,

3 17403

Why we are using air gap magnetic condutors

Ford, IOCL,

2 6630

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

DR Engineering Services,

1968

whether Transformer is singly excited or doubly excited machine?

2 9159


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What are test signals and their significance?

1093


-How do you select cable size for a given load at a given distance from source of supply. How do you find voltage drop.

1760


What is turn ratio of a transformer?

1169


What is the difference between a 3 winding and 2 winding Potential Transformer

2239


What happen Grid EARTH plat got cut.

2176


whats the existence of reactive power and when it arises?

2096


working function importance of mdc meter

2121


what is the circulate the diesel in DG in side pls tell parts name and picture with circulate the diesel

1946


From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?

1736


How cmd is calculated in case of energy neters

1837


what is per unit calculation?looking for simple and strong explanation thk u

2841


How are load losses and no-load losses measured at site in a DG set?

1712


What are diffrent type of road taxes?

1941


Explain the different regions in frequency response?

1049


In a synchronous motor. if start is running at high speed.  What will be the starting torque : Higher Lower Zero

1668