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A generator produces a voltage that is given by V = 311 sin 314 t, where t is in seconds. The frequency and rms voltage are

Answer»

314 Hz, 311 V
50 Hz, 220 V
60 Hz, 230 V
50 Hz, 240 V

SOLUTION :As V = 311 SIN 314 t, hence, `V_(m) = 311 V` and `omega = 314 rArr V_(rms) = V_(m)/sqrt(2) = 311/sqrt(2) =220V` and `v = omega/(2PI) = 314/(2pi) = 50 Hz`


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