1. Which of the following is correct in the uniform quantization process?
(A) Step size varies according to the values of the input signal
(B) The step size remains the same
(C) The quantizer has linear characteristics
(D) Both B and C are correct
2. What is the process of converting the analog sample into discrete form known as?
(A) Quantization
(B) Modulation
(C) Sampling
(D) Multiplexing
3. Which one of the following are the disadvantages of PCM?
(A) Cannot be decoded easily
(B) It requires a large bandwidth
(C) Very high noise
(D) None of the above
4. The modulation technique that requires minimum bandwidth in digital transmission is:
(A) DPCM
(B) PAM
(C) Delta modulation
(D) PCM
5. During the Differential Pulse Code Modulation technique, decoding is performed by:
(A) Sampler
(B) Accumulator
(C) Quantizer
(D) PLL
6. When does granular noise occur?
(A) Step size is too large
(B) Bandwidth is too large
(C) Step size is too small
(D) None of these
7. How is code strength characterized?
(A) Code weight
(B) Code size
(C) Maximum distance
(D) Minimum distance
8. The value of ‘n’ should be _______ for better efficiency and simplicity.
(A) Minimum
(B) Maximum
(C) Infinity
(D) Zero
9. Which of the following are types of distortion?
(A) Jitter
(B) Noise
(C) Error
(D) Both A & B Correct
10. The reconstruction of continuous signals is done using __________ algorithm.
(A) Interpolation
(B) Decimation & Interpolation
(C) Decimation
(D) None of the Above
11. Where is sampling used?
(A) Audio
(B) Speech
(C) Video
(D) All of above
12. The number of errors that can be corrected without erasure information is:
(A) (Dmin – 1)/2
(B) Dmin + 1
(C) Dmin – 1
(D) (Dmin + 1)/2
