GATE Electronics and Communications (EC) 2016 Shift 1 Solved Paper

Question : 33 of 65

Marks: +1, -0

The amplitude of a sinusoidal carrier is modulated by a single sinusoid to obtain the amplitude modulated signal (𝑡) = 5 cos 1600𝜋𝑡 + 20 cos 1800𝜋𝑡 + 5 cos 2000𝜋𝑡. The value of the modulation index is __________