Questions
A carrier wave is modulated by a number of sine waves with modulation indices 0.1, 0.2, 0.3. The total modulation index (m) of the wave is
detailed solution
Correct option is C
m=m12+m22+m32 ⇒m=(0.1)2+(0.2)2+(0.3)2 = =0.01+0.04+0.09 = 0.14Talk 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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