Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How are calculated the aluminium busbar cross section area?

2 6039

Are same transformer be employed for step up and step down services?

3 2872

On what basis primary and secondary of a transformer is chosen?

2 2325




how to male a d.c bettery to blow a 230v bulb?

1 2059

Can a 50-Hz designed transformer be used at 60-Hz system? Is the same remains true, when a 60-Hz designed transformer be used at 50-Hz system? Consider only frequency variation. The voltage remains as rated value in all cases. Justify the answer.

2 4804

How to protect the water pump by no load running.

Cushman Wakefield,

9 6186

Hello, im taking an introduction to PLC..and i'm having a hard time on creating a program for 2 lamps blinking alternately with this button characteristics: 1.) One push button (starts upon pressing) 2.) Same push button (when pressed again, will pause the system) 3.) Same push button (when pressed again, will continue the paused system) 4.) Same push button (when pressed within 2 seconds, will shut off the system) Pls..i know this is just a simple problem for you guys..

2 1608

In n high voltage 11kv system What happened if 1 of CT cable (IDMT) loose.Will e/f or o/c trip.please explain detail

1 1985




In UPFC,What is the need for Dc link ( DC capatior)?

1 2574

Can a transformer designed for a particular voltage and frequency rating be used for different set of mentioned ratings? Assume that the winding does not get burnt because of overheating at higher voltage. If yes, then under which constraint it is possible?

1 1170

why microprocessors are named as 8085 ,8086 etc? what's the reason for this???

HCL, Bhel,

12 24777

what is basically a pulse transformer?

1 5040

what is relay multiplier

Bhel, Wipro, Atomic Energy Commission,

1 3123

whose motors self starting synchronous or Induction motor?give fact reason why not self starting another mother

2 2365

SSC JE ELECT.

SSC, CPWD,

1 15223


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Un-Answered Questions { Electrical Engineering }

what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?

530


How to measure the earth resistance value in a concrete pavement(flood light area)?

515


IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF CURRENT I SHOULD USE WHICH TYPE OF CABLE?

359


Plugging is a phenomenon to= A braking the motor B to accelerate the motor C to run IM as generator D to start the motor

1043


sir, I am from EEE branch.On feb 17 iam going to write an Exam for hindustan petrolium corporation Ltd.So plz send me the written exam pattern/Q's/interview questions.please mail to eee_dharmendra@yahoo.com

419


What is the high series capacitance winding on high voltage power transformer ?

459


does a DG set has low fault level as compared to that of a transformer.If yes then why.

426


what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?

383


can you any one give exact mathematical relation between AC current and DC current?

360


In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.

443


HOE WE CAN IMPROOVE BY USE OF CAPACITOR

410


why -48 volts dc used in telecommucation

851


What is the difference between AC and DC injection methods for rotor earth fault protection

445


why the rotor current becomes in steady state during high slip region? please verify with equations.

565


What are the weight of 800KV DA,DB and DC type tower ?

1546