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Question

___________ loss in transmission line is dependent on diameter of the conductor.

A.

Ferranti 

B.

Eddy current 

C.

Core

D.

Corona

Answer ( Option D)

Corona

Solution

Peek’s formula 

Where, Vr = Phase voltage, in (kV) (rms)

Vd= Disruptive critical voltage in kV (rms value)

r = Radius of conductor, in meter

f = System frequency

Air density factor

D = Spacing between conductors in meters

Pc=  Corona power loss

Corona loss in transmission line is dependent on  diameter of the conductor. 

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