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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

`170V` and `19 Hz`

B

`240 V` and `60 Hz`

C

`170V` and `60 Hz`

D

`120 V` and `19 Hz`

Text Solution

Verified by Experts

The correct Answer is:
A
`V_0=240V`
`:. V_("rms")=V_0/sqrt2=240/sqrt2=170V`
`omega=120rad//s`
`f=omega/(2pi)=120/(2 xx 3.14)=19hZ`
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