Corona & its characteristics

Q.  Which of the following statements are true related to corona?

1. It causes radio interference.
2. It attenuates lightning surges.
3. It causes power loss.
4. It amplifies switching surges.

The codes are:
- Published on 24 Nov 15

a. 1,2,4
b. 1,4
c. 1,2,3
d. 2,3

ANSWER: 1,2,3

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