The?modulation index?(or?modulation?depth) of a?modulation?scheme describes by how much the?modulated?variable of the carrier signal varies around its unmodulated level. It is defined differently in each?modulation?scheme. See: Amplitude?modulation index. Frequency?modulation index.
135) 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. Determine the modulation index
Answer is:
0.5
Explanation:
Related Electronic Devices and Communication MCQ with Answers
Answer is:
1010 kHz and 990 kHz
Explanation:
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 produced are 1010 kHz and 990 kHz
Answer is:
a square law device followed by a low pass filter
Explanation:
One method of producing an amplitude modulation is to add the carrier and modulating signal and then a square law device followed by a low pass filter
Answer is:
goes through a power amplifier
Explanation:
Before transmission the AM produced by a square law device goes through a power amlifier
Answer is:
antenna power and carrier frequency
Explanation:
The range of an AM broadcast depends antenna and carrier frequency