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The voltage of A.C source varies with ti...

The voltage of `A.C` source varies with tiem according equation. `V = 120 sin 100 pi t cos 100 pi t`.Then the frequency of source is

A

`50 Hz`

B

`100 Hz`

C

`150 Hz`

D

`200 Hz`

Text Solution

Verified by Experts

The correct Answer is:
2
`V = 120 sin 100 pi t cos 100 pi t`
`= 60 xx 2 sin 100 pi t cos 100 pi t`
`= 60 sin 200 pi t` and `:. Omega = 200 pi`
`:. n = 100 c p s`
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