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A 1 MHz carrier signal is modulated by a...

A `1 MHz` carrier signal is modulated by a symmertrical sinusoidal wave for period of `100 mus` in a nonlinear (square lae device).Which of the following frequencies will notbe present in the modulated signal

A

`990 kHz`

B

`1010kHz`

C

`1020kHz`

D

`1030kHz`

Text Solution

Verified by Experts

The correct Answer is:
C
The frequency components of modulation signal are from nonlinear device are
`f_(c)`, `f_(c)+-f_(m)`, `f_(c)+-3f_(m)`……
So the frequencies present in the `AM` are `100kHz`, `990 kHz`, `1010 kHz`, `970 kHz`, `1030 kHz`
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