Question

If a number of sine waves with modulation indices $n_1,n_2,n_3$........ modulate a carrier wave, then total modulation index (n) of the wave is

• A. $n_1+n_2$ + .. +2 ($n_1,n_2+..$)
• B. $\sqrt{n_1-n_2+n_3..}$
• C. $\sqrt{{n_1}^2+{n_2}^2+{n_3}^2+..}$
• D. None of these

Answer 1

The correct option is C $\sqrt{{n_1}^2+{n_2}^2+{n_3}^2+..}$