what is the main use of ac and dc drives ? it is only used for speed variation or for power saver also?

1 Answers  

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WHY EXCITATION OF SYNCHRONOUS MACHINE IS DC NOT AC

8 Answers   NTPC,

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What is the meaning of loop in transformer

0 Answers   AST,

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What type of surgery impedence with 200ohs 

1 Answers  

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Please give the formula for converting from 1 tr refrigeration to kw.

2 Answers   Bugema University,

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WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB

0 Answers   IBM,

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when a primary current injection test is required, it is accomplished by what?

3 Answers  

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Why is the starting current high in a DC motor?

2 Answers  

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How to calculate the electrical load for a standard telecom BTS shelter and capacity of DG set required to cater to this load?

3 Answers   Bhel, INDUS, Indus Towers,

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PLEASE SEND ME NTPC RELATED INFORMATION LIKE WHICH TOPICS HAV MORE SCOPE,BOOKS TO READ,CUT OFF...PLEASE.mail at thiru.1203@gmail.com

0 Answers  

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Do you know how to maintain a generator, if so what are those maintenances?

4 Answers  

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What should be the voltage between Neutral and Ground in secondary side of the step down transformer (230 V to 110 V) with no load condition?

4 Answers  

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