why we use 11 kv 22 kv and so on ?

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why we use 11 kv 22 kv and so on ?..

Answer / s raghavendra

we use ac and it is of sinusoidal in nature so for it form factor i.e, the ratio of RMS to Average value is 1.1 so in power systems 1.1 multiples are used....................

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