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Electrical Engineering Interview Questions
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How electrical power(MW)is varied OF an A.C Generator in response to varying steam input to a steam turbine ?

Hindalco,

1 4578

How electrical power is generated by an A.C Generator ?

Hindalco,

1 4044

if there is a voltage difference between neutral and earth when we operate any instrument for fraction of time then where is problem?

 1 3601

what is the static device rather than xmer which work on same principle as xmer?

NTPC, Power Grid,

18 21003

we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the primary current will be 52.48A. So why the HT breaker(SF6 ABB) is rated of 1250Amps ?

 2 4626

WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB

IBM,

1948

Why temperature rise test is conducted in bus bars and Isolators?

Areva,

5 13123

Why do u join toreent power ?

 1 3371

Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards

 1648

why ferranti efect occurs on no load only?

 3 4597

Working of microwave oven?

LG,

1783

what is derating?, why it is neccesary, it is same for all means for drives, motors,and cables.

 1 3205

How is the Depth of Stator Slot being calculated for Synchronous Generator?

 2 3573

difference b/w current and voltage relay?

 1 2784

when voltage increases then current also increases then what is the need of over voltage relay and over current relay? can we measure over voltage and over current by measuring current only?

 1 5532

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Un-Answered Questions { Electrical Engineering }

We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.

1202

why and how voltage sharing in transformer, during magnetic balance test ?

1793

what will happen when the dc supply is given to the capacitor?

999

cc of scorpio?

1770

what is high - pot test. what's its use?????

1600




In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?

1471

What is stepper motor. What is its uses?

647

How we can change the direction of rotation of Induction motor? Prove it using graphical

1611

How to size Air Circuit breaker (ACB)? What is the most important factors?

1780

What is phenomenon of electromagnetic induction and how it works?

611

IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?

2155

High speed earth switch operation with diagram

1875

Why 3 phase induction motor getting supply in body if one of it's phase is cut

1264

1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.

1266

What is zero of the system?

635

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