Which of these statements best describes a Frequency Modulated Signal
F023 TAv 21 - Comms EO 21.03

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Professional Development
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Neil Kipling
Used 16+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
a carrier of constant amplitude, whose instantaneous frequency is varied in sympathy with the modulating frequency.
a carrier of constant frequency, whose amplitude is varied in sympathy with the modulating frequency.
a carrier of constant amplitude, whose Phase is varied in sympathy with the modulating frequency.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an FM signal, the amount by which the carrier frequency is varied either side of its “norm” frequency is called...
Deviation
Depth of Modulation
Bandwidth
Convergence
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following equations would you use to calculate the bandwidth of a FM signal?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term given for something that measures how fast the frequency changes within an FM signal?
The Rate of Deviation
The Extent of Deviation
The Swing of Frequency
The Bandwidth of Signal
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
with regard to an FM signal, what would a change in amplitude represent?
Noise
Pitch of the modulating frequency (fm)
Amplitude of the modulating frequency (fm)
Change of phase in the modulating frequency (fm)
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
On the diagram which letter represents the component that;
amplifies the small signals from the microphone sufficiently to produce the required control of the oscillator frequency?
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
On the diagram which letter represents the component that;
isolates the master oscillator from the changing power levels in the output stage?
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