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Digital Communication MCQ Questions & Answers | ECE

Learn Digital Communication MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Digital Communication MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-1 section-2

Each section contains 100 MCQs on Digital Communication .
1
Equalization in digital communication
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Answer & Solution
Answer: Option D
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2
Which is the most important subsystem for recovering and reconstructing signals in a TDM system?
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Answer: Option B
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3
For any 4-ary FSK, the signal set is given by $${s_k}\left( t \right) = \sqrt {\frac{{2E}}{T}} \cos \left[ {\frac{\pi }{4}\left( {n + k} \right)t} \right];\,0 \leqslant t \leqslant T\,\,k = 1,\,2,\,3,\,4$$
The dimension of its signal space is
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Answer: Option D
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4
In flat-top sampling, a hold circuit is sometimes required. This hold circuit can be designed as a sampler followed by
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Answer: Option A
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5
What is the sampling rate of a signal when it is sampled at every 0.001 sec?
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Answer: Option D
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6
500 Bytes of data needs to be transmitted from an UART every 100 ms. What should be the minimum transmission baud rate of UART, assuming 1 start bit, 8 data bits and 2 stop bits?
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Answer: Option B
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7
In PCM, the biggest disadvantage as compared to AM is
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Answer: Option A
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8
The spectral range of a band pass signal extends from 10 MHz to 10.4 MHz. What is the minimum sampling frequency required for reconstruction?
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Answer: Option D
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9
Which of the following pulse modulation is analog?
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Answer: Option C
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10
In which one of the following techniques, RF binary signals are transmitted as given?
0 : $$\sqrt 2 $$ p'(t)cos[ωC - (∆ω/2)]t
1 : $$\sqrt 2 $$ p'(t)cos[ωC + (∆ω/2)]t
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Answer: Option B
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