A generator produces a voltage that is given by \( \mathrm{V}=240 \sin (120 t) \) volt, where \(...

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A generator produces a voltage that is given by \( \mathrm{V}=240 \sin (120 t) \) volt, where \( t \) is in second. The
\( \mathrm{P} \)
frequency and r.m.s. voltage is:
W
(1) \( 60 \mathrm{~Hz} \) and 240 volt
(2) \( 19 \mathrm{~Hz} \) and 120 volt
(3) \( 19 \mathrm{~Hz} \) and 170 volt
(4) \( 754 \mathrm{~Hz} \) and 170 volt
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