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Question

Corona loss is minimum in.

A.

Monopolar HVDC line.

B.

Bipolar HVDC line

C.

EHVAC line

D.

None of the above

Answer ( Option A)

Monopolar HVDC line.

Solution

Corona power loss is minimum in monopolar  d.c. link.

Monopolar link has only one conductor and return path is provided by permanent earth or sea.

The lineusually operates with negative polarity  with respect to ground. So, reduce corona loss and radio interference. 

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