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Electrical Engineering Interview Questions

I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions

682

Why resistance is not measure in running conditions of motor

1499

What is Percentage impedence of a transformer? why it is expressed at a percentage? what is the importance of percentage impedence in case of a transformer?

970

How test for Ddo vector group test condition?

1315

what do you mean by power factor ? in new view

BDL,

2026

Why the pointer of earthing of 3 pin top is made thick and long compared to the phase and neutral pin ?

1821

What is mean 2XWY

Wilo,

1327

How to calculate Voltage regulation of 22 KV Over head Line.

733

Actually why the transformers are rated in KVA.?

3441

How Can Be Size Of Transformer Corelate With Freqvence?

1151

Is a current transformer step up or step down ?

1807

what is PWM in IGBT and how it works for drive.?

BRG,

732

In transmission line 11kv,33kv etc are rms values are peak or others??

3710

What is transformation ratio what it describes?

658

How i can calculate the cable size for given load,there is any formula,for 3 phase and single phase

1619

Un-Answered Questions { Electrical Engineering }

why high speed tripping relay will be used in tripping circuit why not normal relay

396

dear sir, i completed diploma in electrical in 2005, how i can get electrical supervisor liance in mumbai

997

why is using sensor?what is differece between photoelectric and proxmitty?

1034

what may the reason for vector shift in a generator?

935

what is the formula for calculating the phase clerance between two phases and phase to earth how to calculate the cable for a motor

1004

do anyone out there know where to find a compleete list on acronyms/abbreviations used in offshore electric engineering. MCB - Micro Circuit Breaker, MCCB-Mouldes Case Circuit Breaker, ELCB-Earth Lekage Circuit Breaker, ELMCB- etc.....

1037

What is lifting power for 1 wb/m2 and 1 A magnet?

1216

what is the function of gss in the dg set.

906

Draw the DOL starter and star delta starter drawing?

2016

what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?

1921

what is a bus post insulator? explain its application in a substation.

10640

WHAT HAPPENED DC SERIES MOTOR FIELD WINDING OPEN. CAN POSSIBLE.

2482

If breaker is undefined position, first step to do.

1256

When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?

1128

How much ph is maintained of water resistance starter for slipring induction motor ?

1442