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A generator produces a time varying volt...

A generator produces a time varying voltage given by `V=240 sin 120 t,` where `t` is in second. The rms voltage and frequency are

A

60 Hz and 240 V

B

19 Hz and 120 V

C

19 Hz and 170 V

D

754 Hz and 70 V

Text Solution

Verified by Experts

The correct Answer is:
C
Frequency of a generator i.e., ltBrgt `v=(omega)/(2pi)=(120xx7)/(2xx22)=19Hz`
`v_(rms)=(240)/(sqrt(2))=120sqrt(2)~~170V`
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