Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How are calculated the aluminium busbar cross section area?

2 6091

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

3 2900

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

2 2369




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

1 2090

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 4869

How to protect the water pump by no load running.

Cushman Wakefield,

9 6326

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 1627

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 2045




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

1 2623

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 1193

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

HCL, Bhel,

12 25177

what is basically a pulse transformer?

1 5139

what is relay multiplier

Bhel, Wipro, Atomic Energy Commission,

1 3186

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

2 2400

SSC JE ELECT.

SSC, CPWD,

1 15392


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Un-Answered Questions { Electrical Engineering }

how define the torque in ac drive. from electrical side in the drive friquency ,voltage and current three factor is there.

604


How do we calculate the maximum amount of current in a 300 SQ.MM cable ?

425


what is mean by parallel operation of permanent magnet generators

460


Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

2733


RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

567


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

668


How to calculate the no of Ceiling fan (1200mm sweep) per unit area?

202


What is the differentional relay...what is the work of this in power Tx. how it is works..

387


how to calculate the torque of a motor?

531


i m electrical diploma holder i want to do plc $ Scada some body tell me which insitute is best for me near chandigarh

1658


The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

176


i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors

427


We have given to 3phase supply to ups system & how can coming netural

534


application s to shunt coil

382


How Self works in DG set

202