Linear Systems Transmission

Digital Communications Systems

This set of Digital Communication Puzzles focuses on “Baseband System and Signal Transmission through Linear Systems”.

1. The process of data conversion along with formatting the data is called as ______
a) Formatting
b) Modulation
c) Source coding
d) Amplifying

2. Formatting is the process which includes
a) Pulse code modulation
b) Sampling
c) Quantization
d) All of the mentioned

3. Analog information is converted to digital data using
a) Sampling
b) Quantization
c) Coding
d) All of the mentioned

4. The process that transforms text into binary digits is called as _______
a) Binary coding
b) Data coding
c) Character coding
d) Sampling

5. For the number of bits, k=1 and number of symbols, M=2 the system is called as
a) Unary
b) Binary
c) Quarternary
d) None of the mentioned

6. Perform the bit stream partitioning and find the 8-ary waveform for the word ‘THINK’.
a) 1204443464
b) 4643444021
c) 1240443464
d) none of the mentioned

7. Find the 32-ary waveform for the word ‘THINK’.
a) 514172520
b) 202517415
c) 541172520
d) None of the mentioned

8. Find the 8-ary waveform for the word ‘HAPPY’.
a) 4040020246
b) 0440020246
c) 6420200440
d) None of the mentioned

9. Find the 32-ary waveform for the word ‘HAPPY’.
a) 280856
b) 658082
c) 288056
d) None of the mentioned

10. What are the characteristics of an ideal transmission line?
a) Different amplitude
b) No distortion
c) Time delay
d) All of the mentioned

11. The point at which the output signal power has fallen to 0.707 of its peak value is called as _____
a) 3db point
b) Half power point
c) 3db & Half power point
d) None of the mentioned

12. The ratio of the filter bandwidth at -60db and -6db amplitude response point is called as _____
a) Half point factor
b) Normalized factor
c) Shape factor
d) None of the mentioned

13. As the order of the filter increases, the cost ______ and complexity ______
a) Increases, increases
b) Increases, decreases
c) Decreases, increases
d) Decreases, decreases

14. Which filter has maximum flatness?
a) Chebyshev filter
b) Butter-worth filter
c) High pass filter
d) Normalized filter

15. The measure of the width of the main lobe is called as ________
a) Null to null bandwidth
b) Half power bandwidth
c) Normalized bandwidth
d) Absolute bandwidth

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