The insulation level of 400 kV EHV overhead transmission line is decid

1.	The insulation level of 400 kV EHV overhead transmission line is decided on the basis of
A.	lightning overvoltage
B.	switching overvoltage
C.	corona inception voltage
D.	radio and TV interference
Answer» C. corona inception voltage

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The insulation level of 400 kV EHV overhead transmission line is decided on the basis of

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