How to reduce corona loss?

Q.  Corona loss can be reduced by using

1. Solid conductor.
2. Hollow conductor.
3. Bundle conductor.
- Published on 24 Nov 15

a. 1 only
b. 1 and 2 only
c. 1, 2 and 3 only
d. 2 and 3 only

ANSWER: 2 and 3 only

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