Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why we use perllel conection system in the wiring?

Airtel,

4 6588

why the transformer neutral earthing is to be done by copper flat only,if we use GI flat what is the disadvantage.

2 8387

HOW TO TEST A LIGHTENING ARREST ER ?

Bhushan Power Steel,

2170

FOR 3 PHASE DISTRIBUTION,WHY WE USE ONLY THE VOLTAGE LEVEL OF 440 VOLTS

AITM,

1 3967

what is technical diffrence between table fan and ceiling fan

5 6770

In dc motor starter there is less voltage required for holding contactor that's may why it is called no volt coil. but in ac starter why holding contactor is called no volt coil.

JSW,

2 5538

If there is unit power factor in a power house and a capacitor bank used in a factory at resistive load . In this case, will there leading power factor in power house across that factory.

2 4582

where was current transformer protection units used and why??

1997

there is a # KVA Transformer of 11 KV/440V, in simple(not use formuia) how can you calculate it's HT & LT side current.

Construction, wbsedcl,

5 23747

what is the solution for meger test failed the MV cable?

1 4198

What is the formula that shows relationship between voltage and speed in an induction motor

2 5088

i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula

May Baker,

2160

show the single line diagram of star delta starter with single phase preventer

4588

What safety followup during kWh meter isolation

2057

what are the things that can cause a three phase motor to crawl?

1 3497

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Un-Answered Questions { Electrical Engineering }

how to check regenerative load in drived motor

2182

I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.

2064

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1821

State ohm’s law?

1057

Air refrigeration cycle works on the

1048

How do we find the rating of a transformer, if it got burnt badly.

1501

why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?

1822

why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%

1899

Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?

1994

Dear all, how we select the cable size according to current with or without including different correction factor , is there any direct method for sizing of cable...

2121

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

1837

Either It Possible a dc Motor to Run On Ac Drive [ Ex : ACS 800 , Yaskawa F7 ] If it is Possible How Pls Inform Me dinesh_elect_eng@yahoo.com

1928

Single line diagrams for star to delta and DOL starters.

2218

plz send me HPCL apptitude paper.. maulik_elect@yahoo.co.in

2043

what is mean by PIR in circuitbreaker and give me detail of that?

3472

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