MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 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. |
What is the system function of the system described by the difference equation y(n)=0.5y(n-1)+2x(n)? |
| A. | \(\frac{2}{1+0.5z^{-1}}\) |
| B. | \(\frac{0.5}{1+2z^{-1}}\) |
| C. | \(\frac{0.5}{1-2z^{-1}}\) |
| D. | \(\frac{2}{1-0.5z^{-1}}\) |
| Answer» E. | |
| 2. |
If Y(z) is the z-transform of the output function, X(z) is the z-transform of the input function and H(z) is the z-transform of system function of the LTI system, then H(z)=? |
| A. | \(\frac{Y(z)}{X(z)}\) |
| B. | \(\frac{X(z)}{Y(z)}\) |
| C. | Y(z).X(z) |
| D. | None of the mentioned |
| Answer» B. \(\frac{X(z)}{Y(z)}\) | |
| 3. |
What is the nature of the signal whose pole-zero plot is as shown? |
| A. | Rising signal |
| B. | Constant signal |
| C. | Decaying signal |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
The z-transform X(z) of the signal x(n)=anu(n) has: |
| A. | One pole at z=0 and one zero at z=a |
| B. | One pole at z=0 and one zero at z=0 |
| C. | One pole at z=a and one zero at z=a |
| D. | One pole at z=a and one zero at z=0 |
| Answer» E. | |
| 5. |
Which of the following signals have a pole-zero plot as shown below? |
| A. | a.u(n) |
| B. | u(an) |
| C. | anu(n) |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 6. |
What are the values of z for which the value of X(z)=∞? |
| A. | Poles |
| B. | Zeros |
| C. | Solutions |
| D. | None of the mentioned |
| Answer» B. Zeros | |
| 7. |
WHAT_ARE_THE_VALUES_OF_Z_FOR_WHICH_THE_VALUE_OF_X(Z)=0??$ |
| A. | Poles |
| B. | Zeros |
| C. | Solutions |
| D. | None of the mentioned |
| Answer» C. Solutions | |
| 8. |
If Y(z) is the z-transform of the output function, X(z) is the z-transform of the input function and H(z) is the z-transform of system function of the LTI system, then H(z)=?$ |
| A. | (Y(z))/(X(z)) |
| B. | (X(z))/(Y(z)) |
| C. | Y(z).X(z) |
| D. | None of the mentioned |
| Answer» B. (X(z))/(Y(z)) | |
| 9. |
What is the unit sample response of the system described by the difference equation y(n)=0.5y(n-1)+2x(n)? |
| A. | 0.5(2)<sup>n</sup>u(n) |
| B. | 2(0.5)<sup>n</sup>u(n) |
| C. | 0.5(2)<sup>n</sup>u(-n) |
| D. | 2(0.5)<sup>n</sup>u(-n) |
| Answer» C. 0.5(2)<sup>n</sup>u(-n) | |
| 10. |
The z-transform X(z) of the signal x(n)=anu(n) has: |
| A. | One pole at z=0 and one zero at z=a |
| B. | One pole at z=0 and one zero at z=0 |
| C. | One pole at z=a and one zero at z=a |
| D. | One pole at z=a and one zero at z=0 |
| Answer» E. | |
| 11. |
If X(z) has M finite zeros and N finite poles, then which of the following condition is true? |
| A. | |N-M| poles at origin(if N>M) |
| B. | |N+M| zeros at origin(if N>M) |
| C. | |N+M| poles at origin(if N>M) |
| D. | |N-M| zeros at origin(if N>M) |
| Answer» E. | |
| 12. |
What are the values of z for which the value of X(z)=‚àû?$ |
| A. | Poles |
| B. | Zeros |
| C. | Solutions |
| D. | None of the mentioned |
| Answer» B. Zeros | |
| 13. |
What are the values of z for which the value of X(z)=0? |
| A. | Poles |
| B. | Zeros |
| C. | Solutions |
| D. | None of the mentioned |
| Answer» C. Solutions | |