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Communication Systems

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE-MAIN 2019
A 100 V carrier wave is made to vary between 160 V and 40 V by a modulating signal. What is the modulation index?
JEE Main Physics Easy
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Q JEE MAIN_2019
Given below in the left column are different modes of communication using the kinds of waves given in the right column. A. Optical Fibre P....
JEE Main Physics Hard
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Q JEE MAIN_2019_
A message signal of frequency 100 MHz and peak voltage 100 V is used to execute amplitude modulation on a carrier wave of frequency 300...
JEE Main Physics Easy
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Q JEE MAIN 2019
In an amplitude modulator circuit, the carrier wave is given by, $C(t)=4 \sin (20000 \pi t)$ while modulating signal is given by, $...
JEE Main Physics Medium
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Q JEE MAIN 2019
To double the covering range of a TV transmission tower, its height should be multiplied by:
JEE Main Physics Easy
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Q JEE MAIN 2019
An amplitude modulated signal is given by $V(t)=10\left[1+0.3 \cos \left(2.2 \times 10^4 t\right)\right] \sin \left(5.5 \times 10^5 t\right)$. Here $t$ is in seconds. The sideband...
JEE Main Physics Medium
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Q JEE-MAIN 2020
The correct match between the entries in column I and column II are
JEE Main Physics Easy
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Q JEE Main 2019
A TV transmission tower has a height of 140 m and the height of the receiving antenna is 40 m . What is the maximum...
JEE Main Physics Easy
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Q JEE MAIN 2019
An amplitude modulated signal is plotted below:

Which one of the following best describes...
JEE Main Physics Hard
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Q JEE MAIN 2021
If the sum of the heights of transmitting and receiving antennas in the line of sight of communication is fixed at 160 m , then...
JEE Main Physics Easy
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