Moderate
The presence of ozone due to corona is harmful because it________________?
Correct answer: B. corrodes the material
- A. reduces power factor
- B. corrodes the material
- C. gives odour
- D. transfer energy to the ground
- E. none of the above
Explanation
Corona produces ozone, and ozone is a strong oxidising agent that attacks and corrodes metal and insulation materials. Its odour is noticeable but is not the principal harmful effect asked here.
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