1- the depth of modulation of an AM waveform that reached a maximum amplitude of 20v and a minimum amplitude of 2.7 v could be expressed as approximatly :
a-3.1 %
b-.76
c-.13
d-7.62%
2- if a carrier wave of 200 khz is amplitude modulated by an audio signal which has frequency components betwen 300 hz & 3,4 khz the lowest frequency component of the resulting DSP AM wave would be :
a-300 hz
b-199.7 khz
c-196.6 khz
d-3.4 khz
3- a 10 khz sinsudal signal is used to amplitude modulate a sinsoidal carrier frequency of 50 khz the number of frequency components that would be included in the resulting DSP AM waveform would be :
a-5
b-2
c-3
d-many hundreds