what is the disadvantage of leading power factor...why can't we use it (pf=0) for a long period of time?

10 Answers   Appco, snsce,

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What is the different between Insulator & Di-electrict?

2 Answers  

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How do you select a cable size(Cu&Al) for a particular load

10 Answers   Adhunik, BPCL Bharat Petroleum, Hiecon, TATA,

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Is the inductance parameter of transmission line affected by taking the earth into consideration?is the same true for capacitance? Justify the answer.

1 Answers  

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we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.

3 Answers   CFCL,

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. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?

0 Answers  

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can any one provide some material?

1 Answers  

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Is phenomenon of resonance is harmfull fr the machine? if not or if yes please explain it?

0 Answers   Bhel,

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How energy is generated in hydroelectric power plant?

0 Answers  

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What are the advantages of speed control using thyristor?

0 Answers  

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What are the advantages & disadvantages of a group electrive drive?

0 Answers  

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what type of cables exsisting in the world and how many types

9 Answers   Alstom,

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