The analogue signal from a microphone is to be transmitted in digital form.
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April 10, 2021
Question 10 The analogue signal from a microphone is to be transmitted in digital form. The variation with time t of part of the signal f...
Showing posts with label Communication. Show all posts
Showing posts with label Communication. Show all posts
Saturday, April 10, 2021
Saturday, March 27, 2021
The sinusoidal carrier wave has a frequency of 750 kHz and an amplitude of 5.0 V. The carrier wave is frequency modulated by a sinusoidal signal of frequency 7.5 kHz and amplitude 1.5 V.
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March 27, 2021
Question 9 A carrier wave is frequency modulated. (a) Describe what is meant by frequency modulation . [2] (b) The sinusoidal car...
Friday, December 27, 2019
The initial section of the transmission line for a signal from a telephone exchange is illustrated in Fig. 5.1.
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December 27, 2019
Question 8 (a) For a signal transmitted along an optic fibre, state what is meant by: (i) attenuation [1] (ii) noise . [2] (b) The initial...
