Questions
The antenna current of an AM transmitter is 8A, when only Carrier is sent. It increased to 8.93 A , when the carrier is modulated by 9 single sine wave. The percentage modulation.
detailed solution
Correct option is C
We know that, PTPC=1+m22 ⇒ im2ic2=1+m22 ⇒8.93282=1+m22 ⇒m = 0.7 i.e 70%Talk 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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