Which statement out of the following statements about ‘corona’ is incorrect?

Which statement out of the following statements about ‘corona’ is incorrect? A) Corona gives rise to radio interference B) Corona results in loss of power in transmission C) Corona discharge can be observed as red luminescence D) Corona is always accompanied by a hissing voice
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Answer :

Which statement out of the following statements about ‘corona’ is incorrect? A) Corona gives rise to radio interference B) Corona results in loss of power in transmission C) Corona discharge can be observed as red luminescence D) Corona is always accompanied by a hissing voice

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