what is unbalanced rotating magnetic field?

1 Answers  

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i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

0 Answers   IOCL,

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KVA transformer of different frequencies of 50hz,100hz,500hz&1000hz. which one of these transformer has big size? Give reason

4 Answers   Suzlon,

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What is the use of centrifugal switch in 1phase induction motor? Why is it so called?

2 Answers  

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How to calculate VA rating for CT or PT or Control Transformer?

0 Answers   Veez,

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Why iron core losses are constant at all loads in a transformer ?

1 Answers   GATE,

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How can we save electrical cost i.e switchgear, wiring, conduiting etc in a room?

1 Answers  

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RESISTONS R1 AND R2 in parallel = Total R.? 1-R=R1+R2 2-R=1/R1 + 1/R2 3-1/R + R1+R2 R=R1R2/R1+R2 select one

2 Answers   BSNL, PGVCL Paschim Gujarat Vij Company Limited, TCS, Wartsila,

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1- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks

0 Answers  

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how the phase convertor changes the no. of phases

0 Answers  

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What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer

0 Answers  

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what are the types of control systems to control the speed of the motor??

1 Answers  

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