A carrier of peak voltage 15 V is used to transmit a message signal. If the modulation index is 70%, then what will be the peak voltage of the modulating signal?(a) 25 V(b) 11 V(c) 10.5 V(d) 30 VI had been asked this question in a national level competition.This intriguing question comes from Communication Systems topic in chapter Communication Systems of Physics – Class 12

A carrier of peak voltage 15 V is used to transmit a message signal. I

1.	A carrier of peak voltage 15 V is used to transmit a message signal. If the modulation index is 70%, then what will be the peak voltage of the modulating signal?(a) 25 V(b) 11 V(c) 10.5 V(d) 30 VI had been asked this question in a national level competition.This intriguing question comes from Communication Systems topic in chapter Communication Systems of Physics – Class 12
Answer» The correct option is (c) 10.5 V To EXPLAIN: μ = \(\FRAC {A_m}{A_c}\). Am = μ × Ac. Am = \( ( \frac {70}{100})\) × 15 V Am = 10.5 V.

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