why generation voltages are 6.6kv or 11kv and why not some one give that stander

why generation voltages are 6.6kv or 11kv and why not some one give that stander that generation voltages are 5kv or 12kv?

Question Posted / irfankh

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why generation voltages are 6.6kv or 11kv and why not some one give that stander that generation vo..

Answer / balajiellapu

power system uses sinusoidul wave.its foam factor is 1.11.any value multiplied with 1.11 always gives value like 3.3,6.6,11 etc
In emf equation also 1.11 value is there
SO values like 6.6kv,3.3kv,11kv,22kv metioned on name plates

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