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Amplitude Modulation and Demodulation (Real time experiment)
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Amplitude Modulation and Demodulation (Real time experiment)
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Introduction
Theory
Set Up
Procedure
Experiment
Webcam
Quiz
Slot Booking Procedure
Feedback
1)
A 3500 Hz audio tone amplitude modulates a 800 kHz carrier resulting in modulated signal having a percentage modulation of 85%. The highest frequency that appears in the spectra of the modulated signal is
3,500 Hz
796,500 Hz
800,000 Hz
803,500 Hz
2)
In case of tone modulation, the maximum possible power efficiency is
10%
25%
33%
50%
3)
The main reason why SSB and DSB modulations do not found acceptance for use in home-type entertainment equipment is
reception at receiver being more noisy
higher cost of the receiver
requirement of long antenna at receiver
higher cost of the transmitter
4)
An AM signal contains 400 W at its carrier and 64 W each at its sidebands. If the percentage modulation of the AM signal is changed to 50%, the power content of each sideband becomes
64 W
32 W
25 W
16 W
5)
A 96 KHz bandwidth is required to accommodate eight AM broadcasts simultaneously. The maximum modulating frequency of each station must be limit
12 KHz
10 KHz
8 KHz
6 KHz
Cite this Simulator:
vlab.amrita.edu,. (2011). Amplitude Modulation and Demodulation (Real time experiment). Retrieved 24 April 2024, from vlab.amrita.edu/?sub=59&brch=163&sim=259&cnt=362
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