What is the problem, if a circuit breaker is not closing.

4 Answers   KSEB, L&T, Siemens,

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

2 Answers  

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Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?

2 Answers   L&T,

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v=I*R, i.e V is directly proportional to I. now P=V*I. so V=P/I. thus v is inversely proportional to I. so what is the correct one? If both are correct than for which kind of condition this 2 differ

3 Answers  

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I have tow 200 KVA UPS, both are in parallel mode.My question is that, both are running on battery when power fail, if one of them fail (Eg rectifire fails or some other reason), at thet time reverse power will come to faild ups if it comes then it will harm to failed ups or not? if not then how it protects to faied ups????????????????

1 Answers  

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Why the CT Secondary is rated as 5A generally?

2 Answers  

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what is cogging in motors?

1 Answers  

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difference between diode and scr?

2 Answers  

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WHAT IS MEANT BY DERATING OF THYRISTOR?

0 Answers   TATA, Trane,

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We have 420volts, Diesel gen-sets each 750kva 4nos. we are operating with bus bar duct having 10x150mm for each face 4nos. our question is what is the minimum gap required between each face? is there any satutory regulations?

1 Answers   Alliance One,

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what is the static device rather than xmer which work on same principle as xmer?

18 Answers   NTPC, Power Grid,

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what are the types of cables?

3 Answers  

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