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Sinusoidal carrier voltage of frequency ...

Sinusoidal carrier voltage of frequency `1.5 MHz` and amplitude `50V` is amplitude modulated by sinusoidal voltage of frequency `10kHz` producing `50%` modualtion. The lower and upper side-band frequencies in `kHz` are

A

`1490`, `1510`

B

`1510`, `1490`

C

`(1)/(1490)`, `(1)/(1510)`

D

`(1)/(1510)`, `(1)/(1490)`

Text Solution

Verified by Experts

The correct Answer is:
A
(`1`) Here, `f_(c)=1.5 MHz=1500kHz`, `f_(m)=10 kHz`
Low side band frequency
`=f_(c)-f_(m)=1500 kHz-10kHz=1490 kHz`
Upper side band frequency
`=f_(c)+f_(m)=1500 kHz+10 kHz=1510 kHz`
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Knowledge Check

  • Sinusoidal carrier voltage of frequency 3 MHz and amplitude 50V is amplitude modulated by sinusoidal voltage of frequency 10kHz producing 50% modualtion. The lower and upper side-band frequencies in kHz are

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  • Sinusoidal carrier voltage of frequency 1.5 MHz and amplitude 50 V is amplitude modulated by sinusoidal voltage of frequency 10 kHz producing 50% modulation. The lower and upper side-band frequency in kHz are

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