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An amplitude modulation (AM) scheme uses tone modulation, with modulation index of 0.6. The power efficiency of the AM scheme is _______ % (rounded of

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An amplitude modulation (AM) scheme uses tone modulation, with modulation index of 0.6. The power efficiency of the AM scheme is _______ % (rounded off to one decimal place)
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Given:

μ = 0.6 

μ2 = (0.6)2

Power efficiency  = η  = μ2/(μ2 + 2)

⇒ Power efficiency  = η = 0.1525

⇒ ​Power efficiency  = η = 15.2 %

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