Digital Communication System MCQs
Practice free Digital Communication System multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 252 questions — no login required.
Question 10easy
For a pulse width of 1 fts in a tracking radar, the minimum distance of the target must be metre.
Question 11easy
A VHF amplifier has a noise factor of 10 dB. The prportion of the amplifier's output noise which is internally generated is
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Question 13easy
Regarding use of synchronous system in data transmission which statement is wrong?
Question 14easy
To transmit N signals each band-limited to fm hertz by TDM will require a minimum bandwidth of hertz.
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Question 16easy
It there are C channels, each being sampled at S samples per second with each sample producing an N-bit code, the encoder bit rate B is
Question 17easy
The most recent internationally accepted PCM system operating over wire pairs is the 30 speech channel system specified by CCITT in Geneva in 1972. Using a sampling rate of 8 kHz and an 8-bit code, the line rate in megabits per second would be
Question 18easy
The telegraph circuit in which two messages can be transmitted in the same direction is called