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  • In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitudes are found to be <img alt="\mathrm{6 \mathrm{~V} \: and \: \: 2 \mathrm{~V}}" src="/latex-image/?%5

In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitudes are found to be \mathrm{6 \mathrm{~V} \: and \: \: 2 \mathrm{~V}} respectively. The modulation index is :

Option: 1

100%


Option: 2

80%


Option: 3

60%


Option: 4

50%


Answers (1)

best_answer

\mathrm{V_{\max }=V_c+V_m =6 \mathrm{~V} }

\mathrm{V_{\min } =V_C-V_m=2 \mathrm{~V} }

\mathrm{V_c=4 \mathrm{~V}, V_m =2 \mathrm{~V} }

\mathrm{\text { Modulation index } =\mu=\frac{V_m}{V_c} }

                                          \mathrm{\mu =\frac{1}{2} }

                                           or

                                         \mathrm{\mu =50 \%}
Hence (4) is correct option.

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