Digital Signal Processing Questions and Answers | Digital Signal Processing MCQs

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Questions
1 If NB and NC are the orders of the Butterworth and Chebyshev filters respectively to meet the same frequency specifications, then which of the following relation is true?
A NC=NB
B NC< NB
C NC>NB
D Cannot be determined

Answer:NCB
2 The chebyshev-I filter is equi-ripple in pass band and monotonic in the stop band.
A True
B False

Answer:True
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3 What is the number of minima’s present in the pass band of magnitude frequency response of a low pass chebyshev-I filter of order 4?
A 1
B 2
C 3
D 4

Answer:2
4 What is the number of maxima present in the pass band of magnitude frequency response of a low pass chebyshev-I filter of order 5?
A 1
B 2
C 3
D 4

Answer:3
5 The sum of number of maxima and minima in the pass band equals the order of the filter.
A True
B False

Answer:True
6 Which of the following is the characteristic equation of a Chebyshev filter?
A 1+ϵ2TN2(s/j)=0
B 1-ϵ2TN2(s/j)=0
C 1+ϵ TN2(s/j)=0
D None of the mentioned

Answer:1+ϵ2TN2(s/j)=0
7 The poles of HN(s).HN(-s) are found to lie on ___________
A Circle
B Parabola
C Hyperbola
D Ellipse

Answer:Ellipse
8 If the discrimination factor ‘d’ and the selectivity factor ‘k’ of a chebyshev I filter are 0.077 and 0.769 respectively, then what is the order of the filter?
A 2
B 5
C 4
D 3

Answer:5
9 Which of the following is the correct relation between ‘s’ and ‘z’?
A z=1/(1+sT)
B s=1/(1+zT)
C z=1/(1-sT)
D none of the mentioned

Answer:z=1/(1-sT)
10 What is the center of the circle represented by the image of jΩ axis of the s-domain?
A z=0
B z=0.5
C z=1
D none of the mentioned

Answer:z=0.5

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