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  4. A modulating signal is a square wave, as shown in the figure. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/67cb81d1f99cd2537579fbbc010fd666-.png /> If the carrier wave is given as c ( t )=2 sin (8 π t) volts, the modulation index is:

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Q. A modulating signal is a square wave, as shown in the figure.
image
If the carrier wave is given as $c ( t )=2 \sin (8 \pi t)$ volts, the modulation index is:

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Solution:

Modulation index
$ =\frac{\text { Amplitude of mod ulating signal }}{\text { Amplitude of carrier wave }} $
$ \mu=\frac{1}{2}$