what is reactive power and active power

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Why the transformer rating is denoted in VA rating why not in KW

7 Answers  

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why is neccessary Tap changing of power transformer with in a certain time

1 Answers  

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What is sequence network? Discuss all three types of sequence network.

1 Answers  

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what is the VA(Voltampire)? define with calculation?

4 Answers  

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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.

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Explain what is electric traction?

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How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.

0 Answers  

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why we use capacitor in lighting fixer

2 Answers  

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how many type of of electrical fuse please explan?

9 Answers  

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What happens when the polarity changes in CT? Explain briefly?

8 Answers  

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what is automatic voltage regulator and it is used?

2 Answers   HAL,

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