Explore topic-wise MCQs in Digital Signal Processing.

This section includes 7 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.

X(Z)_IS_THE_Z-TRANSFORM_OF_THE_SIGNAL_X(N),_THEN_WHAT_IS_THE_Z-TRANSFORM_OF_THE_SIGNAL_NX(N)??$

A. -z(dX(z))/dz
B. zdX(z)/dz
C. -z<sup>-1</sup>dX(z)/dz
D. z<sup>-1</sup>(dX(z))/dz
Answer» B. zdX(z)/dz
Discussion
2.

IF_X(Z)_IS_THE_Z-TRANSFORM_OF_THE_SIGNAL_X(N),_THEN_WHAT_IS_THE_Z-TRANSFORM_OF_THE_SIGNAL_X(-N)??$

A. X(-z)
B. X(z<sup>-1</sup>)
C. X<sup>-1</sup>(z)
D. None of the mentioned
Answer» C. X<sup>-1</sup>(z)
Discussion
3.

If the ROC of X(z) is r1

A. |a|r1<|z|<|a|r2
B. |a|r1>|z|>|a|r2
C. |a|r1<|z|>|a|r2
D. |a|r1>|z|<|a|r2
Answer» B. |a|r1>|z|>|a|r2
Discussion
4.

If X(z) is the z-transform of the signal x(n) then what is the z-transform of anx(n)?

A. X(az)
B. X(az<sup>-1</sup>)
C. X(a<sup>-1</sup>z)
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
5.

According to Time shifting property of z-transform, if X(z) is the z-transform of x(n) then what is the z-transform of x(n-k)?

A. z<sup>k</sup>X(z)
B. z<sup>-k</sup>X(z)
C. X(z-k)
D. X(z+k)
Answer» C. X(z-k)
Discussion
6.

What is the z-transform of the signal x(n)=[3(2n)-4(3n)]u(n)?

A. 3/(1-2z<sup>-1</sup>)-4/(1-3z<sup>-1</sup>)
B. 3/(1+2z<sup>-1</sup>)-4/(1+3z<sup>-1</sup>)
C. 3/(1-2z)-4/(1-3z)
D. None of the mentioned
Answer» B. 3/(1+2z<sup>-1</sup>)-4/(1+3z<sup>-1</sup>)
Discussion
7.

Which of the following justifies the linearity property of z-transform?[x(n)‚ÜîX(z)].

A. x(n)+y(n) ‚ÜîX(z)Y(z)
B. x(n)+y(n) ‚ÜîX(z)+Y(z)
C. x(n)y(n) ‚ÜîX(z)+Y(z)
D. x(n)y(n) ‚ÜîX(z)Y(z)
Answer» C. x(n)y(n) ‚Äö√Ñ√∂‚àö√∫‚àö√ÜX(z)+Y(z)
Discussion