The voltage of an ac supply varies with time(t) as V=120sin100 π tcos100π t. The maximum voltage and frequency respectively are

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120 volts, 100 Hz

1202volts, 100 Hz

60 volts, 200 Hz

60 volts, 100 Hz

answer is D.

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Detailed Solution

V=120 sin100πt cos 100 πt⇒ V =60 sin 200πt Vmax=60V andν=100Hz

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