Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How are calculated the aluminium busbar cross section area?

2 6273

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

3 3052

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

2 2500




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

1 2229

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 5100

How to protect the water pump by no load running.

Cushman Wakefield,

9 6899

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 1717

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 2189




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

1 2803

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 1284

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

HCL, Bhel,

12 27238

what is basically a pulse transformer?

1 5856

what is relay multiplier

Bhel, Wipro, Atomic Energy Commission,

1 3519

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

2 2631

SSC JE ELECT.

SSC, CPWD,

1 16044


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Un-Answered Questions { Electrical Engineering }

What will happen if a dc source is given to a tubelight. Will it work or wont it work....

513


why magnetising curve not start with zero voltage?

592


what is the problem when i want to close a circuit breaker by local position it closes well.but when i close it in remote position it trips

217


How will calculate losses in an multi core Aluminium LT cable of different sizes & upto what length we can use a LT Cable ?

753


Draw a block diagramof Three UPS systems connected in Parallel mode?

707


why industry prefer ht motor instead of lt motor.

680


what is effect of length of air gap on performance of dc motor and generator?

350


In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?

918


What is the latest generation of circuit breakers called?

8209


define hysteresis loss, eddy current loss and windage loss

543


What is core CT & it's function?

583


is there any current and voltage drop on liquid resistance starter water/soda tank ?

560


How two nos. 130 kw D.C motor get synchronise using D.C drive.

565


Load transfer in 11kv double busbar switchgear - operation.

442


How calculated single phase induction motor req. Capacitor?

94