MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Signal Processing Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the z-transform of the signal x(n)=nanu(n)? |
| A. | \(\frac{(az)^{-1}}{(1-(az)^{-1})^2}\) |
| B. | \(\frac{az^{-1}}{(1-(az)^{-1})^2}\) |
| C. | \(\frac{az^{-1}}{(1-az^{-1})^2}\) |
| D. | \(\frac{az^{-1}}{(1+az^{-1})^2}\) |
| Answer» D. \(\frac{az^{-1}}{(1+az^{-1})^2}\) | |
| 2. |
What is the z-transform of the signal x(n)=an(sinω0n)u(n)? |
| A. | a)\(\frac{az^{-1} sin\omega_0}{1+2 az^{-1} cos\omega_0+a^2 z^{-2}}\) |
| B. | b)\(\frac{az^{-1} sin\omega_0}{1-2 az^{-1} cos\omega_0- a^2 z^{-2}}\) |
| C. | c)\(\frac{(az)^{-1} cos\omega_0}{1-2 az^{-1} cos\omega_0+a^2 z^{-2}}\) |
| D. | d)\(\frac{az^{-1} sin\omega_0}{1-2 az^{-1} cos\omega_0+a^2 z^{-2}}\) |
| Answer» E. | |
| 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-1) |
| C. | X(a-1z) |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
What is the z-transform of the signal x(n)=sin(jω0n)u(n)? |
| A. | \(\frac{z^{-1} sin\omega_0}{1+2z^{-1} cos\omega_0+z^{-2}}\) |
| B. | \(\frac{z^{-1} sin\omega_0}{1-2z^{-1} cos\omega_0-z^{-2}}\) |
| C. | \(\frac{z^{-1} cos\omega_0}{1-2z^{-1} cos\omega_0+z^{-2}}\) |
| D. | \(\frac{z^{-1} sin\omega_0}{1-2z^{-1} cos\omega_0+z^{-2}}\) |
| Answer» E. | |