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Communication Systems

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021
The amplitude of upper and lower side bands of A.M. wave where a carrier signal with frequency 11.21 MHz , peak voltage 15 V is...
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Q JEE MAIN 2021
What should be the height of transmitting antenna and the population covered if the television telecast is to cover a radius of 150 km ?...
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Q JEE MAIN 2021
Consider a situation in which reverse biased current of a particular P-N junction increases when it is exposed to a light of wavelength $...
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Q JEE MAIN 2019
In a line of sight radio communication, a distance of about 50 km is kept between the transmitting and receiving antennas. If the height of...
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Q JEE MAIN 2022
A square wave of the modulating signal is shown in the figure. The carrier wave is given by C(t) = 5 sin $(8 \pi t)$...
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Q JEE MAIN 2021
A TV transmission tower antenna is at a height of 20 m. Suppose that the receiving antenna is at.
(i) ground level
(ii)...
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Q JEE MAIN 2021
A carrier signal $C(t)=25 \sin \left(2.512 \times 10^{10} t\right)$ is amplitude modulated by a message signal $m(t)=5 \sin \left(1.57 \times 10^8 t\right)$ and transmitted through...
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Q JEE MAIN 2021
Two identical antennas mounted on identical towers are separated from each other by a distance of 45 km. What should nearly be the minimum height...
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Q JEE_MAIN_2021
For VHF signal broadcasting, $\_\_\_\_$ $\mathrm{km}^2$ of maximum service area will be covered by an antenna tower of height 30 m , if the receiving...
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Q JEE MAIN 2021
The maximum and minimum amplitude of an amplitude modulated wave is 16 V and 8 V respectively. The modulation index for this amplitude modulated wave...
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