Questions
An AM wave is expressed as , the minimum and maximum values of modulated carrier wave are
detailed solution
Correct option is C
Modulated signal can be written as E(t)=Ec1+μ coswmtcoswct Given equation E=101+0.6 cos2000πtcos2×108πt Comparing equations μ = 0.6 and Ec=10 Now, Emax=(1+μ)Ec = (1+0.6)10 = 16 V and Emin=(1−μ)Ec = (1−0.6)10 = 4 VTalk 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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