The voltage of an ac supply varies with time (t) as $V = 120 s i n 100 π t c o s 100 π t$ . The maximum voltage and frequency respectively are

120 volts, 100 Hz

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\frac{120}{\sqrt{2}} v o l t s, 100 H z

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60 volts, 200 Hz

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60 volts, 100 Hz

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Solution

The correct option is D 60 volts, 100 Hz
$V = 120 s i n 100 π t c o s 100 π t \Rightarrow V = 60 s i n 200 π t V_{m a x} = 60 V a n d v = 100 H z$

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The voltage of an ac supply varies with time (t) as V=120 sin 100 π t cos 100 π t. The maximum voltage and frequency respectively are

The correct option is D 60 volts, 100 HzV=120 sin 100 π t cos 100 π t⇒V=60 sin 200 π tVmax=60V and v=100 Hz

The voltage of an ac supply varies with time (t) as $V = 120 s i n 100 π t c o s 100 π t$ . The maximum voltage and frequency respectively are

The correct option is D 60 volts, 100 Hz
$V = 120 s i n 100 π t c o s 100 π t \Rightarrow V = 60 s i n 200 π t V_{m a x} = 60 V a n d v = 100 H z$