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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 10
31.
Reception through space wave is limited to line of sight distance.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
A video transmission system transmits 625 picture frames per second. Each frame consist of a 400 x 400 pixel grid with 64 intensity levels per pixel. The data rate of the system is
16 Mbps
100 Mbps
600 Mbps
6.4 Gbps
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Which of the following is a false statement about Armstrong modulation system?
The system is basically phase, not frequency, modulation
AFC is not needed, as a crystal oscillator is used
Equalization is unnecessary
Frequency multiplication must be used
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Which one is digital modulation technique?
AM
PAM
PCM
None
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Since noise phase modulated FM wave, as the noise sideband frequency approaches the carrier frequency, the noise amplitude
is equalized
is increased
is decreased
remains constant
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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