A special case of amplitude modulation is where the baseband signal is a pure sine wave. If??c?is the carrier frequency and??m the base band signal, the spectrum of the modulated signal contains the values ?c,??c?+??m?,??c?-?m
132) A special case of amplitude modulation is where the baseband signal is a pure sine wave. If??c?is the carrier frequency and??m the base band signal, the spectrum of the modulated signal contains the values
Answer is:
?c,??c?+??m?,??c?-?m
Explanation:
Related Electronic Devices and Communication MCQ with Answers
Answer is:
AM/AC
Explanation:
If AC and AM are the amplitudes of the carrier and baseband signals then modulation index in amplitude modulation is AM/AC
Answer is:
small
Explanation:
To reduce the distortion in amplitude modulation, modulation index is kept small
Answer is:
0.5
Explanation:
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.
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