Digital Signal Processing Multiple Choice Questions and Answers

(1) If N_B and N_C 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] N_C=N_B

[B] N_C< N_B

[C] N_C>N_B

[D] Cannot be determined

Answer: N_CB

(2) The chebyshev-I filter is equi-ripple in pass band and monotonic in the stop band.

[A] True

[B] False

Answer: True

(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+ϵ²T_N²(s/j)=0

[B] 1-ϵ²T_N²(s/j)=0

[C] 1+ϵ T_N²(s/j)=0

[D] None of the mentioned

Answer: 1+ϵ²T_N²(s/j)=0

(7) The poles of H_N(s).H_N(-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

Digital Signal Processing Questions and Answers | Digital Signal Processing MCQs

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Digital Signal Processing Questions and Answers | Digital Signal Processing MCQs

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