Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How are calculated the aluminium busbar cross section area?

2 8427

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

3 4870

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

2 4206

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

1 3613

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 6980

How to protect the water pump by no load running.

Cushman Wakefield,

9 11569

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 3378

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 3539

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

1 4409

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 2520

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

Bhel, HCL,

15 39756

what is basically a pulse transformer?

1 8354

what is relay multiplier

Atomic Energy Commission, Bhel, Wipro,

1 5326

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

2 4434

SSC JE ELECT.

CPWD, SSC,

1 18501


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Un-Answered Questions { Electrical Engineering }

what is servo motor and how it works?

1748


A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

1560


why the India electrical supply transmission loss is high when compare to us

1536


Why do we avoid electrical conduits in floors at apartments?

1604


If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

3924






i want to learn control schedule for 11kv panel? can any one send the detailed control schedule?

1892


in indoor type circuit breakers why only the corner breaker trips specially during cold season. What is the reason.

1424


what will be the effect if you were using different brands of outlets?

1439


What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

3049


how ceiling fan worked?

1459


What is the tube exial fan?

1665


Draw the single line diagram of the power station?

626


What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

1146


why ct ,cvt should be stored in a vertical position?

2093


FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

2920