how percentage impedence effect on the size of the power transformer?

2 Answers   Bhel,

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what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/

0 Answers  

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Anybody now how to claculate the Bescom power consumption?

1 Answers  

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is it necessarry to charge the battery of ups always??

3 Answers  

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In a overhead system why the voltage between line &ground is taken for basic comparison ?and in case of underground cables the comparison take only by the voltage between cables?

1 Answers   L&T,

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how to reverse the direction of universal motor?

2 Answers   Finolex, JGT, TATA,

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Explain types soft starters?

7 Answers   Siemens, TCS,

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why breaker closing coil gets burnt if supply is continously provided to it.

1 Answers   TATA,

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How the speed of synchronous motor changes with the variation of load?

1 Answers  

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Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?

2 Answers  

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Why double earthing is required ?

1 Answers  

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In the transformer, in which form we see the losses of transfprmer ?

3 Answers  

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