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Discussion :: Communication Systems

  1. A 1000 kHz carrier is simultaneously modulated with 300 Hz, 800 Hz and 2 kHz audio sine waves. Which of the following frequency is least likely to be present in the output?

    2. A.
    1002 kHz
    B.
    1000 kHz
    C.
    999.2 kHz
    D.
    998.0 kHz

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    Answer : Option B

    Explanation :

    Frequency present in the sidebands is equal to = fc ± fm, fc ± 2fm , fc ± 3fm .

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