why near the transformers, the Jelly(small white colored rocks)are poured.and what are conditions for that?

3 Answers  

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why lightning arrester and other equipment earthing conneting from same earth bar ?

1 Answers  

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my UPS is 600VA with 0.6 p.f and i use it for my computer which has 450W power supply unit, a monitor of 633nW and speakers. Can any one explain this.. because the output of UPS should be 360W (<450W)

2 Answers  

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How do we calculate the out Put voltage of generator, after excitation being given?

2 Answers  

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how manyunits consumed by 25 kvar capacitor bank

2 Answers   MRF, Suzuki,

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only some transformers and some generator requires NGR why?

1 Answers  

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In iduction motors the current is higher than normal for both the cases when the voltage appllied is more than the rated as well as less than the rated, why?

2 Answers  

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can a 50 Hz transformer work satisfactorily if placed under 60 Hz,what are the prices and losses that will arise

5 Answers  

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why is electricity produced and distributed in multiples of 11. 440V, 11KV, 22KV, 132KV etc

2 Answers   Bhel,

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What is spike & surge.

2 Answers  

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What is Isolation Current transformer and what purpose to use it in REF relay ?

1 Answers  

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what is the difference between synchronization and paralleling?

13 Answers   BARC,

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