Questions
A signal of frequency 20 kHz and peak voltage of 5V is used to modulate a carrier wave of frequency 1.2 MHz and peak voltage 25V choose the correct statement regarding amplitude modulation
detailed solution
Correct option is D
GivenFrequency of signal fm=20 kHzPeak voltage Am=5 VFrequency of carrier wave fc=1.2 MHzPeak voltage AC= 25 VModulation index =AmAc=525=0.2Lower side band frequency fLSB=fc−fm=1200−20=1180 kHzUpper side band frequency fUSB=fm+fc=1200+20=1220 kHzTalk to our academic expert!
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A message signal of frequency 10 kHz and peak voltage of 10 volts is used to modulate a carrier of frequency 1 MHz and peak voltage of 20 volts. The side bands are 1010 kHz and______________kHz.
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