Question

Which of the following is not a type of modulation index?
A. Amplitude modulation index
B. Frequency modulation index
C. Phase modulation index
D. Carrier amplitude modulation index

Answer 1

Hint: The question talks about the various frequency ranges in a radio frequency platform in different areas like rural and urban areas, like the villages, towns, cities and even provinces.

Complete step by step answer: Carrier amplitude modulation is not a type of modulation index, as against AM (Amplitude modulation index), FM (Frequency modulation index) and PM (Phase modulation index), which are examples of modulation index. The Amplitude modulate index, Frequency modulation index and Phase modulation index are basically products of radio waves in and around.
The reach of a broadcasting station FM, AM and PM are independent of carrier frequency, which means that no matter where we found ourselves with a radio set, we would be able to listen to information as well as news. The frequency of the carrier wave of the radio wave changes as per the transmit data in frequency modulation while in amplitude modulation, the carrier wave changes according to values and data on the ground. It can be seen in radio and signal transmission, also since radio waves are an example of electromagnetic waves.
Therefore, the Carrier amplitude modulation index is not a type of modulation index.
The correct option is Option D, Carrier amplitude modulation index.

Note:It can be seen in other waves similar or are close to radio waves, such as infrared, applied in Bluetooth devices for example phones, computers, ipads and even tablets, where files can be sent from one electronic gadget to the other.