Regarding amplitude modulation (AM) , which of the following applies?
A) a method of transmitting electromagnetic signals by varying the height of the wave
B) can be heard at shorter distance, especially at night, than frequency modulated signals
C) quality of signal is superior to frequency modulation
D) quality of signal decreases the further away listeners are from a station
E) a method of changing variations in a sound wave by varying its frequency
Correct Answer:
Verified
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