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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
`f_(c) = 1.5 MHz = 1500 kHz`
`f_(m) = 10 kHz`
Now lower side band frequency = `f_(c) - f_(m)`
` = 1500 - 10`
` = 1490 ` kHz
Upper side band frequency = `f_(c) + f_(m)`
` = 1500 +10`
` = 1510 ` kHz
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NIKITA PUBLICATION-COMMUNICATION SYSTEMS-Multiple Choice Questions (Production and detection of amplitude modulated wave)
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  9. In amplitude modulation

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  10. Modulation factor determines-

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  11. Degree of modulation-

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  12. The AM wave is equivalent to the summation of

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  13. The AM wave contans three frequencies viz:

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  18. What is the band width in amplitude modulation ?

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