In amplitude modulation, the message signal is encoded in the ______ of the carrier wave.
Amplitude
Frequency
Phase
Wavelength
Related Questions
A message signal of frequency 10 kHz and peak voltage 10 V is used to modulate a carrier wave of frequency 1 MHz and peak voltage 20 V. If the modulation index is 0.5, what is the peak voltage of the upper sideband?
2.5 V
5 V
10 V
20 V
The characteristic impedance of free space is
120π Ω
377 Ω
√3/2 Ω
300 Ω
For good demodulation of AM signal of carrier frequency , the value of RC should be
RC < \frac{1}{f}
RC > > \frac{1}{f}
Modulation is the phenomenon of
Superimposing the audio frequency signal over a carrier wave
Separating the audio frequency signal from the carrier wave
Separating carrier wave from the modulated wave
Any of (a), (b), (c) above
The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as
Transmission
Reception
Modulation
Detection
When is the modulation frequency in frequency modulation, the modulation index is proportional to
A message signal of frequency 10 kHz and peak voltage of 10 V is used to modulate a carrier of frequency 1 MHz and peak voltage of 20 V. What is the modulation index?
0.2
0.5
2.0
1.0
What is the bandwidth of an AM signal if the highest modulating frequency is 5 kHz?
5 kHz
10 kHz
2.5 kHz
20 kHz
Which of the following is NOT a characteristic of a geostationary satellite?
Orbital period of approximately 24 hours
Circular orbit
Located above the Earth's equator
Elliptical orbit
