A message signal is used to modulate a carrier frequency. If the peak voltages of message signal and carrier signal are increased by 
and 
respectively, then the percentage change in modulation index is
Text Solution
Verified by ExpertsThe correct answer is:
D
We know that, the modulation index is given by
where, 
maximum amplitude of message signal and 
maximum amplitude of carrier-signal.
Given, 
and 
are increased by 
and 
, then the modulation index becomes.
[From Eq. (i)]
The percentage change in modulation index,
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A message signal of frequency is used to modulate a carrier of frequency , then the frequencies o…
For an amplitude modulated wave, the maximum and minimum amplitudes are and respectively. Then th…
The refractive index of ionosphere is
The radio horizon of the transmission of an antenna placed on floor in a shopping mall, where the …
The process of retrieval of information from the carrier wave
An amplitude modulate wave is represented by volt where is in seconds. Then the ratio of the uppe…