Embibe Experts Solutions for Chapter: Communication Systems, Exercise 1: Exercise (Conceptual Questions)

Frequencies in the UHF range normally propagate by means of:

Long distance short wave radio broadcasting uses _____.

The sound waves after being converted into electrical waves are not transmitted as such, because

The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as

In an amplitude modulated wave for audio frequency of $400 \mathrm{cycles} {\mathrm{second}}^{-1}$, the proper carrier frequency will be,

The TV transmission tower in Delhi has a height of $240 \mathrm{m}$. The distance up to which the broadcast can be received (taking the radius of the earth to be $6.4\times {10}^6 \mathrm{m}$) is

The maximum distance up to which the TV transmission through TV tower of height $h$ can be received is proportional to:

The range of frequencies allotted for commercial FM radio broadcast is