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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the formula for calculating transformer Efficiency?

2 3634

what is active power & reactive power?

Avtech, Jindal,

1277

What difference between MCB,MCCB,RCCB,ELCB please explain briefly with its rating.

3 7549

What is transformer tap changers please explain

Feedback Venture, Sail,

3 7221

what kind of motors are used in the winders of coal field?and what are the various methods of it's speed control?

Monnet,

1 2264

how synchronous generator can be used as synchronous condenser?

Monnet, Wipro,

3 3305

how can synchronous generator can be used as synchronous condenser?

Monnet,

3 4490

why we r using 4-20ma instead of 0-20ma in instrumentation

EID Parry,

2 4067

what is ratio test?

1 2332

why capacitors cant used in genset to maintain power factor..??

2 3487

why we are using DC supply for all protection relays, why cant we use AC supply..???

1 3867

Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.

960

MCB MCCB ACB VCB

1 2977

what will happened if generator runs with slow speed?

3 3730

my UPS suddenly goes off and all panel light also blow off.This happens even main electric supply is not interrupted.After some time it automatically starts functioning normally.Batteries are new.

1124


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Un-Answered Questions { Electrical Engineering }

What are the two major types of control system?

199


I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.

836


hi , i have 150 kw loud and we need 50 m cabil,i want to know wich size cabil we use. thanks

1091


Can any body tell gulf interview question for experienced electrical engineer ?

1096


how to select automotive wire by mathematical equation with given current, vlotage and resistance

1496






what is the cause of voltage dipp or swell in the transmission lines?

1190


State the formula for overall efficiency of thermal power station

2110


How many devices can be connected in one zone of FACP

1356


what is the formula for computing cable tray size & capacity

1250


when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)

1033


What are the different losses In a de mac1une'! t.xplam

1777


What is power factor why we should maintain the power factor unless what will happen

748


What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

1181


how flow current in 220 kv line to line

1135


A d.c. Shunt motor is found suitable to drive fans because they require?

213