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The time varying part in the equation of instantaneous power has frequency ________________ that of the frequency of voltage or current wave forms.

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The time varying part in the equation of instantaneous power has frequency ________________ that of the frequency of voltage or current wave forms.

(a) equal to

(b) twice

(c) thrice

(d) four times

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This is a very interesting question from Instantaneous Power topic in division Power and Power Factor of Network Theory

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Right choice is (b) twice

Easy explanation: The time varying part in the equation of instantaneous power has a frequency twice that of voltage or current wave forms and the other part is a fixed part.

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