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In amplitude modulation, the bandwidth ...

In amplitude modulation, the bandwidth is

A

Twice the audio signal frequency

B

Thrice the audio signal frequency

C

Thrice the carrier wave frequency

D

Twice the carrier wave frequency

Text Solution

Verified by Experts

The correct Answer is:
A
Bandwidth `= 2 f_m `
`f_m rarr` message signal.
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Knowledge Check

  • Amplitude modulation has

    A
    one carrier with infinite frequencies.
    B
    one carrier with two side band frequencies.
    C
    one carrier with high frequency.
    D
    one carrier.

  • STATEMENT-1 In amplitude modulated wave, the band-width is twice the signal frequency STATEMENT 2 In amplitude modulated wave, the bandwidth does not depend on the Frequency of the carrier wave

    A
    Statement-1 is True. Statement-2 is True
    Statement-2 is a correct explanation for statement-1
    B
    Statement is True Statement-2 is True
    Statement-2 is NOT a correct explanation for Statement-1
    C
    Statement-1 Is True Statement-2 is False
    D
    Statement-1 is False. Statement 2 is True

  • In amplitude modulation, the modulation index mu, is kept less than or equal to 1 because.

    A
    `mu gt 1` will result in interference between carrier frequency and message frequency, resulting into distortion.
    B
    `mu gt 1` will result in overlapping of both sidebands resulting into loss of information.
    C
    `mu gt 1` will result in change in phase between carrier signal and message signal.
    D
    `mu gt 1` indicates amplitude of message signal greater than amplitude of carrier signal resulting into distortion.