MCQOPTIONS
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MCQOPTIONS
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 | |
| 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) | |
| 3. |
If the ROC of X(z) is r1<|z|
|
| 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 | |
| 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 | |
| 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) | |
| 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>) | |
| 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) | |