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Questions and Answers
What remains constant during the frequency modulation process?
What remains constant during the frequency modulation process?
What happens to the frequency of the modulated signal when the modulating signal reaches its positive peak?
What happens to the frequency of the modulated signal when the modulating signal reaches its positive peak?
Which signal is characterized by a high frequency and constant amplitude?
Which signal is characterized by a high frequency and constant amplitude?
What does the frequency deviation represent in frequency modulation?
What does the frequency deviation represent in frequency modulation?
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What type of wave is the message signal in frequency modulation?
What type of wave is the message signal in frequency modulation?
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When the modulating signal is at its trough, what is the frequency of the frequency modulated signal?
When the modulating signal is at its trough, what is the frequency of the frequency modulated signal?
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In the context of frequency modulation, what characteristic does the frequency modulated signal display with time?
In the context of frequency modulation, what characteristic does the frequency modulated signal display with time?
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What does the graph of the carrier signal primarily represent?
What does the graph of the carrier signal primarily represent?
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Study Notes
Frequency Modulation
- Frequency modulation (FM) is a process where the carrier signal's frequency changes according to the modulating signal.
- The carrier signal's amplitude remains constant.
- The output frequency of the FM signal equals the carrier frequency when the modulating signal is zero.
- When the modulating signal reaches its positive peak, the FM signal's frequency reaches its maximum.
- At the negative peaks, the FM signal's frequency reaches its minimum.
- The process shifts the carrier frequency (f) by a certain amount (Δf, frequency deviation).
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Description
Explore the fundamentals of frequency modulation (FM) in this quiz. Understand how the carrier signal's frequency varies with the modulating signal, while its amplitude remains constant. Delve into the nuances of frequency deviation and the behavior of the FM signal during positive and negative peaks.