June 12, 2021

Quantization and Coding MCQ’s

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This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Quantization and Coding”.

1. The basic task of the A/D converter is to convert a discrete set of digital code words into a continuous range of input amplitudes.
a) True
b) False

2. What is the type of quantizer, if a Zero is assigned a quantization level?
a) Midrise type
b) Mid tread type
c) Mistreat type
d) None of the mentioned

3. What is the type of quantizer, if a Zero is assigned a decision level?
a) Midrise type
b) Mid tread type
c) Mistreat type
d) None of the mentioned

4. What is the term used to describe the range of an A/D converter for bipolar signals?
a) Full scale
b) FSR
c) Full-scale region
d) FS

5. What is the term used to describe the range of an A/D converter for uni-polar signals?
a) Full scale
b) FSR
c) Full-scale region
d) FSS

6. What is the fixed range of the quantization error eq(n)?
a) –Δ6 < eq(n) ≤ Δ6
b) –Δ4 < eq(n) ≤ Δ4
c) –Δ2 < eq(n) ≤ Δ2
d) –Δ16 < eq(n) ≤ Δ16

7. If the dynamic range of the signal is smaller than the range of quantizer, the samples that exceed the quantizer are clipped, resulting in large quantization error.
a) True
b) False

8. What is the relation defined by the operation of quantizer?
a) xq(n) ≡ Q[x(n)] = x^k
b) xq(n) = Q[x(n)] = x^k, if x(n) ∈ Ik
c) xq(k) ≡ Q[x(k)] = x^k
d) none of the mentioned

9. What is the step size or the resolution of an A/D converter?
a) Δ = (R)/2(b+1)
b) Δ = (R)/2(b-1)
c) Δ = (R)/3(b+1)
d) Δ = (R)/2

10. In the practical A/D converters, if the first transition may not occur at exactly + 1/2 LSB, then such kind of error is known as ____________
a) Scale-factor error
b) Offset error
c) Linearity error
d) All of the mentioned

11. In the practical A/D converters, if the difference between the values at which the first transition and the last transition occur is not equal to FS – 2LSB, then such error is known as _________
a) Scale-factor error
b) Offset error
c) Linearity error
d) All of the mentioned

12. In the practical A/D converters, if the differences between transition values are not all equal or uniformly changing, then such error is known as?
a) Scale-factor error
b) Offset error
c) Linearity error
d) All of the mentioned

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