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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?

 1671

What is the de rating factor of cable? What is the importance of the de rating factor in cable selection?

 1619

What is size 00, 01, 1 etc., in HRC fuse types?

Jaypee,

1839

What is the meaning of 40X8X2 busbar dimensions for carring load of 400 Amps

 1573

What is the purpose of shunt trip in ACB function?

 1 5388

What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?

Remi,

3494

Is there any Flood lighting system which produces more light (More power consumption 1000W,400W etc.,), white light and restart immediately after power restoration ?

 1 2641

What is working principle of washing machine?

IBPA, Samsung,

9 88698

Can we use 3 phase energy meter for measureing power in 2 phase 440 V phase circuit?

 2 4568

1)What are the proccedure of initial charge of 100AH lead Acid battery bank 2)whether discharge test is reqd ? if it is rqd why, how 3)what are the discharge critieria (volt/cell or sp.gravity/cell

 1 2773

what is ignition?

 1 2938

sir,i am swati. i am goin to gv jspl exam on 21st nov'10. iwant previous year question paper. plz help me out. my emailid is swatisinha.dav@gmail.com

 1 2916

why the autotransformer burnt while stating the pumpmotor?, In starter and motor there was no abnormality.

 4 12372

what condition there autotransformer will fail?

 2 3411

Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

 1678

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Un-Answered Questions { Electrical Engineering }

HOW WE CAN REDUCE THE CIRCUIT COMPLEX OF STAR-DELTA STARTER .BECAUSE NOW WE USING ONE TIMER RELAY & THREE CONTACTOR FOR MAIN,STAR & DELTA ?IF ANY IDEAS PLZ POST.THANK U

1990

How does a transformer contribute towards the widespread popularity of ac system over dc?

637

i've iocl interview.. if you know the interview process please give me information..

1446

define the non synchoronism of synchoronous machine in general g or m??

1438

anyone knows service engineer in chennai for EDM SPARKING MACHINE.CHMER PULSE CD 60 M.pL GIVE ANY CONTACT NOS

1966




Explain about 3 phase motor fault current calculation with examples?

2408

in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

1401

what happens when series resonance occurs?

1385

Define open loop control system.

672

DERIVE AN EXPREION FOR MAXIMUM POER TRANSMISSION, WHAT ARE ITS APPLICATIONS.

1581

What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.

1867

What is the cut-off rate?

704

What’s electric traction?

664

Why field rheostat is kept in minimum position while armature rheostat at maximum position?

617

can any one tell me about the Extra low voltage systems?From where we give supply to these type of systems??

1502

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