Determine modulation index, Electrical Engineering

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Q. If the output signal fromanAMmodulator is given by u(t) = 5 cos 1800 πt + 20 cos 2000 πt + 5 cos 2200 πt , determine:

(a) The modulating signal m(t) and carrier c(t).

(b) The modulation index.

(c) The ratio of the power in sidebands to the power in the carrier.


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