Question

Q1: Choose the correct answer: (choose five only) 1) One of the disadvantages of PCM is a) Very high noise. b) Cannot be decoded easily. c) It requires large bandwidth. d) All of the above. 2) In uniform quantization process a) The step size remains same. b) Step size varies according to the values of the input signal. c) The quantizer has liner characteristics. d) Both a and c are correct. 3) The process of converting the analog sample into discrete form is called a) Modulation. b) Multiplexing. c) Quantization. d) Sampling. 4) The noise that affects PCM a) Transmission noise. b) Quantizing noise. c) Transit noise. d) Both a and b are correct. (20 Mark) 5) A distorted signal of frequency $f_m$ is recovered from sampled signal if the sampling frequency $f_s$ is a) $f_s > 2f_m$ b) $f_s < 2f_m$ c) $f_s = 2f_m$ d) $f_s \ge 2f_m$ 6) In pulse width modulation a) Synchronization is not required between transmitter and receiver b) Amplitude of the carrier pulse is varied. c) Instantaneous power at the transmitter is constant. d) None of the above. 1-2

          Q1: Choose the correct answer: (choose five only)
1) One of the disadvantages of PCM is
a) Very high noise.
b) Cannot be decoded easily.
c) It requires large bandwidth.
d) All of the above.
2) In uniform quantization process
a) The step size remains same.
b) Step size varies according to the values of the input signal.
c) The quantizer has liner characteristics.
d) Both a and c are correct.
3) The process of converting the analog sample into discrete form is called
a) Modulation.
b) Multiplexing.
c) Quantization.
d) Sampling.
4) The noise that affects PCM
a) Transmission noise.
b) Quantizing noise.
c) Transit noise.
d) Both a and b are correct.
(20 Mark)
5) A distorted signal of frequency $f_m$ is recovered from sampled signal if the sampling
frequency $f_s$ is
a) $f_s > 2f_m$
b) $f_s < 2f_m$
c) $f_s = 2f_m$
d) $f_s \ge 2f_m$
6) In pulse width modulation
a) Synchronization is not required between transmitter and receiver
b) Amplitude of the carrier pulse is varied.
c) Instantaneous power at the transmitter is constant.
d) None of the above.
1-2

Q1: Choose the correct answer: (choose five only)
1) One of the disadvantages of PCM is
a) Very high noise.
b) Cannot be decoded easily.
c) It requires large bandwidth.
d) All of the above.
2) In uniform quantization process
a) The step size remains same.
b) Step size varies according to the values of the input signal.
c) The quantizer has liner characteristics.
d) Both a and c are correct.
3) The process of converting the analog sample into discrete form is called
a) Modulation.
b) Multiplexing.
c) Quantization.
d) Sampling.
4) The noise that affects PCM
a) Transmission noise.
b) Quantizing noise.
c) Transit noise.
d) Both a and b are correct.
(20 Mark)
5) A distorted signal of frequency fm is recovered from sampled signal if the sampling
frequency fs is
a) fs > 2fm
b) fs < 2fm
c) fs = 2fm
d) fs ≥ 2fm
6) In pulse width modulation
a) Synchronization is not required between transmitter and receiver
b) Amplitude of the carrier pulse is varied.
c) Instantaneous power at the transmitter is constant.
d) None of the above.
1-2

Added by Carlos M.

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