The value of carrier frequency equation for the FM signal:v(t)= 5 cos(6600t+ * 12sin2500t) 1005 Hz O 1050 Hz 1250 Hz O

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Subject: Fundamental Communication
1%TY lI. I.
9:01
The value of carrier frequency equation for
the FM signal:v(t)= 5 cos(6600t+
* 12sin2500t)
1005 Hz O
1050 Hz
1250 Hz O
Modern FM receivers use de-emphasis
* :circuit for
reducing the amplitude of high
frequencies in the audio signal
increasing the amplitude of higher
modulating frequencies
making demodulation easy O
The variation of frequency deviation
depends on the amplitude of
The audio signal O
Both of these
The carrier signal
Transcribed Image Text:1%TY lI. I. 9:01 The value of carrier frequency equation for the FM signal:v(t)= 5 cos(6600t+ * 12sin2500t) 1005 Hz O 1050 Hz 1250 Hz O Modern FM receivers use de-emphasis * :circuit for reducing the amplitude of high frequencies in the audio signal increasing the amplitude of higher modulating frequencies making demodulation easy O The variation of frequency deviation depends on the amplitude of The audio signal O Both of these The carrier signal
9:1
Armstrong system is to generate FM makes
* the frequency deviation is
Both of these
Maximum positive value
Minimum negative value
The disadvantages of using slope detector
vs Foster-seeley discriminator
The detector operates only for small
deviation in frequency
Both of these
Low pass filter of the detector produces
distortion in the detection
The ratio in which maximum permitted
frequency deviation to the maximum
:permitted audio frequency, is
The worst-case modulation index
None of these
The best-case modulation index
Transcribed Image Text:9:1 Armstrong system is to generate FM makes * the frequency deviation is Both of these Maximum positive value Minimum negative value The disadvantages of using slope detector vs Foster-seeley discriminator The detector operates only for small deviation in frequency Both of these Low pass filter of the detector produces distortion in the detection The ratio in which maximum permitted frequency deviation to the maximum :permitted audio frequency, is The worst-case modulation index None of these The best-case modulation index
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