what is the difference between DOL starter&star-delta starter& automatic star-delta starter

2 Answers   Dalkia, GSK,

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What is the allowalable frequency variation in India and in US? Why there is the difference?

3 Answers  

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Differentiate between Zero and Negative sequence current

0 Answers  

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How can we calculate earth mat conductor size ..? & give the formula to determine earth conductor size?

3 Answers  

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difference between a diode and thyristor?

0 Answers  

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How Calculat the Cable Sizing of HT/LT System & Explian by one Exampal?

1 Answers   Siemens,

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How to take of Transformer oil Break down voltage test?

2 Answers  

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Transformers with dc supply

4 Answers  

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How we can defined theecopper cable size if we know the aluminium cable size?

0 Answers   Cummins,

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why the Different manufacture's rating of Gas genset are different? i.e : cummins genset rating is in KVA .( 625kv). While GE- Jenbacher make genset have rating in Kw. (625 kw)

1 Answers   L&T,

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i am using auto transformer for starting of induction motor to provide reduse voltages...but the principle of a tansformer according to definition"which transform energy to on circuit to another circuit with constant power and constant frequency". so if i am using reduse voltage then current obsely hige because power is same.but we use auto transfarmer for starting of induction motor to give low current.but here according to definition we are giving hige current.

0 Answers  

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WHY 6.6KV MOTORS ARE STAR CONNECTED AND WHY NOT DELTA CONNECTED,

15 Answers   Bhel,

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