This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Matched Z Transformation”.

1. In which of the following transformations, poles and zeros of H(s) are mapped directly into poles and zeros in the z-plane?

a) Impulse invariance

b) Bilinear transformation

c) Approximation of derivatives**d) Matched Z-transform**

2. Which of the following is true in matched z-transform?

a) Poles of H(s) are directly mapped to poles in z-plane

b) Zeros of H(s) are directly mapped to poles in z-plane**c) Poles & Zeros of H(s) are directly mapped to poles in z-plane**

d) None of the mentioned

3. In matched z-transform, the poles and zeros of H(s) are directly mapped into poles and zeros in z-plane.**a) True**

b) False

4. The factor of the form (s-a) in H(s) is mapped into which of the following factors in z-domain?

a) 1-e^{aT}z**b) 1-e ^{aT}z^{-1}**

c) 1-e

^{-aT}z

^{-1}

d) 1+e

^{aT}z

^{-1}

5. The factor of the form (s+a) in H(s) is mapped into which of the following factors in z-domain?

a) 1-e^{aT}z

b) 1-e^{aT}z^{-1}**c) 1-e ^{-aT}z^{-1}**

d) 1+e

^{aT}z

^{-1}

6. If the factor of the form (s-a) in H(s) is mapped into 1-e^{aT}z^{-1} in the z-domain, the that kind of transformation is called as ______________

a) Impulse invariance

b) Bilinear transformation

c) Approximation of derivatives**d) Matched Z-transform**

7. The poles obtained from matched z-transform are identical to poles obtained from which of the following transformations?

a) Bilinear transformation**b) Impulse invariance**

c) Approximation of derivatives

d) None of the mentioned

8. The zero positions obtained from matched z-transform and impulse invariance method are not same.**a) True**

b) False

9. The sampling interval in the matched z-transform must be properly selected to yield the pole and zero locations at the equivalent position in the z-plane.**a) True**

b) False

10. What should be value of sampling interval T, to avoid aliasing?

a) Zero

b) Sufficiently large**c) Sufficiently small**

d) None of the mentioned