Answer / k.prakashchandra

The arc is quickly quenched as the metallic
vapours,electrons and ions produced during arc, rapidly
condense on the surface of the breaker contacts due to
fast rate of recovery of dielectric strength in vacuum.

why using carbun bresh in dc motor

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In zero voltage we can pass supply to our body means we cant get shock its true ? how we can do it ?

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what are the types of basic earthing?and why we are doing that?

3 Answers   Bharti,

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what is diffrence between primary & secondry transformer?

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What is the exact load current needed for a place which has 100nos of bulb of each 100w?

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Parts of machine and their discription in details with suitable photo

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which tap of the transormer you will use in critical condition(worst)?

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static chagre

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why should we india maintain frequency of 50 Hz.

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difference between alternator & GENERATOR

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