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

View Answer

Answer:N_CB

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

A True

B False

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer