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  1. Consider the frequency modulated signal 10 cos (2p x 105t + 5 sin (2p x 1500t) + 7.5 sin (2p x 1000t) with carrier frequency of 105Hz. The modulation index is

    2. A.
    12.5
    B.
    10
    C.
    7.5
    D.
    5

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    Answer : Option B

    Explanation :

    Total frequency deviation = 5 x 1500 + 7.5 x 1000 = 15000

    Thus modulation index = .

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