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If modulation index of an AM wave is increased from 1.5 to 2, then the transmitted power..........a) remains same b) increases by 20% c) increases by 41% d) increases by 50% |
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Answer» c) increases by 41% When m =1.5, transmitted power (pt) = pc (1 + \(\cfrac{1.5^2}2\))= 2.125 pc and when m = 2, pt = pc ( 1 + \(\cfrac{2^2}2\)) = 3pc so increase = \(\cfrac{3p_c-2.125p_c}{2.125p_c}\) = 0.41 |
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