Explore topic-wise MCQs in Digital Signal Processing.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Signal Processing knowledge and support exam preparation. Choose a topic below to get started.

1.

An IIR system with system function H(z)= ( frac{B(z)}{A(z)} ) is called a mixed phase if ___________

A. All poles and zeros are inside the unit circle
B. All zeros are outside the unit circle
C. All poles are outside the unit circle
D. Some, but not all of the zeros are outside the unit circle
Answer» E.
Discussion
2.

An IIR system with system function H(z)= ( frac{B(z)}{A(z)} ) is called a minimum phase if ___________

A. All poles and zeros are inside the unit circle
B. All zeros are outside the unit circle
C. All poles are outside the unit circle
D. All poles and zeros are outside the unit circle
Answer» B. All zeros are outside the unit circle
Discussion
3.

If the frequency response of an FIR system is given as H(z)=1-5/2z-1-3/2z-2, then the system is ___________

A. Minimum phase
B. Maximum phase
C. Mixed phase
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
4.

If the frequency response of an FIR system is given as H(z)=1-z-1-6z-2, then the system is ___________

A. Minimum phase
B. Maximum phase
C. Mixed phase
D. None of the mentioned
Answer» C. Mixed phase
Discussion
5.

If the frequency response of an FIR system is given as H(z)=6+z-1-z-2, then the system is ___________

A. Minimum phase
B. Maximum phase
C. Mixed phase
D. None of the mentioned
Answer» B. Maximum phase
Discussion
6.

What is the causal inverse of the FIR system with impulse response h(n)= (n)-a (n-1)?

A. (n)-a (n-1)
B. (n)+a (n-1)
C. a<sup>-n</sup>
D. a<sup>n</sup>
Answer» E.
Discussion
7.

What is the inverse of the system with impulse response h(n)= (n)-1/2 (n-1)?

A. (1/2)<sup>n</sup>u(n)
B. -(1/2)<sup>n</sup>u(-n-1)
C. (1/2)<sup>n</sup>u(n) &amp; -(1/2)<sup>n</sup>u(-n-1)
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
8.

What is the inverse of the system with impulse response h(n)=(1/2)nu(n)?

A. (n)+1/2 (n-1)
B. (n)-1/2 (n-1)
C. (n)-1/2 (n+1)
D. (n)+1/2 (n+1)
Answer» C. (n)-1/2 (n+1)
Discussion
9.

If h(n) is the impulse response of an LTI system T and h1(n) is the impulse response of the inverse system T-1, then which of the following is true?

A. [h(n)*h<sub>1</sub>(n)].x(n)=x(n)
B. [h(n).h<sub>1</sub>(n)].x(n)=x(n)
C. [h(n)*h<sub>1</sub>(n)]*x(n)=x(n)
D. [h(n).h<sub>1</sub>(n)]*x(n)=x(n)
Answer» D. [h(n).h<sub>1</sub>(n)]*x(n)=x(n)
Discussion
10.

If a system is said to be invertible, then?

A. One-to-one correspondence between its input and output signals
B. One-to-many correspondence between its input and output signals
C. Many-to-one correspondence between its input and output signals
D. None of the mentioned
Answer» B. One-to-many correspondence between its input and output signals
Discussion