Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How are calculated the aluminium busbar cross section area?

2 5983

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

3 2827

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

2 2278




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

1 2020

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 4745

How to protect the water pump by no load running.

Cushman Wakefield,

9 6077

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 1575

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 1936




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

1 2536

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 1144

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

HCL, Bhel,

12 24275

what is basically a pulse transformer?

1 4925

what is relay multiplier

Bhel, Wipro, Atomic Energy Commission,

1 3071

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

2 2332

SSC JE ELECT.

SSC, CPWD,

1 15037


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Un-Answered Questions { Electrical Engineering }

How can I known multiplying factor .without multiplying table

216


trasnfarmaer core make

397


WHAT IS THE TOTAL POWER GENERATION IN CHHATTISGARH?

398


what is earth pit , how we can measured it, what earth rods reference

970


I have 200 KVA Isolation Transformer for UPS input side. & ups was having 48% load, suddenly got short what will be the reason.

694


Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC

466


What do you mean by per capita requirement of electrical energy in india

576


what is meant by twilight switches 7 where its applicable ?

410


PLZ EXPLAIN THE INTERLOCKING AND CONTROLLING OF CONTACTORS????HOW CAN I DO THAT?

2649


what is the difference b/w ground & virtual ground?

616


I want to know the 'Test voltage' for Tandelta testing of 3.3 / 6.6 / 11 KV Motors. Please explain

394


how to decide the capacity of accl

656


How can we design a HVAC Plant room which includes AHU,FCU,Chillers,Cooling towers, Pumps etc & how will they work? any Drawing if possible?

731


Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.

1347


Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.

360