Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

1295

Why resistance is not measure in running conditions of motor

Falcon,

1 2518

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?

Haldia,

1527

How test for Ddo vector group test condition?

2076

what do you mean by power factor ? in new view

BDL,

3 3809

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

Sanima Hydro Power,

3 3302

What is mean 2XWY

Wilo,

2111

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

1289

Actually why the transformers are rated in KVA.?

BSL, Engineering,

4 5001

How Can Be Size Of Transformer Corelate With Freqvence?

Essar,

1 2051

Is a current transformer step up or step down ?

2 2931

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

BRG,

1338

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

1 6228

What is transformation ratio what it describes?

Cushman Wakefield,

1272

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

Prescient Technologies,

2 2814


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Un-Answered Questions { Electrical Engineering }

we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

1585


How harmonic block test are conducted on relays ( Siemens,Areva ect )power transformer using omicron kit?

1860


What are the advantages and disadvantages of negative feed back?

738


what is control supply rating of a machine

1589


WHTA IS LIMT OF LEAKGE CURRENT OF 11 KV 1 CORE 1000SQ.MM. XLPE CABLE.LOAD ON CABLE IS AROUND 600AMP .LENGTH 500 MTRS.

1794






Formulae for calculating the transmission line losses for different voltage levels

1722


what is the question paper model for section engineer in RRB

1569


what is the Pickup/drop off ratio in BCPU relays

4280


Give some example of fault limiting devices?

915


What is limitedly stable system?

770


what is the difference between circular wdg & ractangular wdg?

1663


Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

1310


how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.

1606


what is the meaning of neutral displacement ???

2351


What is a dc motor?

770