Maximum Amplitude of an amplitude modulated 10V and minimum amplitude is 5V. Find its modulation index?(a) 0.65(b) 0.9(c) 0.33(d) 1This question was posed to me during a job interview.My question is taken from Power Calculation topic in division Amplitude Modulation of Analog Communications

Maximum Amplitude of an amplitude modulated 10V and minimum amplitude

1.	Maximum Amplitude of an amplitude modulated 10V and minimum amplitude is 5V. Find its modulation index?(a) 0.65(b) 0.9(c) 0.33(d) 1This question was posed to me during a job interview.My question is taken from Power Calculation topic in division Amplitude Modulation of Analog Communications
Answer» Correct CHOICE is (C) 0.33 Explanation: We know, Modulation INDEX(µ) = (Vmax-Vmin)/(Vmax+Vmin), Where, Vmax = Maximum Amplitude of an amplitude MODULATED = 10V Vmin = Minimum amplitudeof an amplitude modulated = 5V Therefore, µ = (10-5)/(10+5) = 0.33.

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