MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 6 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 step response of the system y(n)=ay(n-1)+x(n) -1 |
| A. | \(\frac{1}{1-a}\)(1+an+2)u(n) |
| B. | \(\frac{1}{1+a}\)(1+an+2)u(n) |
| C. | \(\frac{1}{1-a}\)(1-an+2)u(n) |
| D. | \(\frac{1}{1+a}\)(1-an+2)u(n) |
| Answer» D. \(\frac{1}{1+a}\)(1-an+2)u(n) | |
| 2. |
The impulse response of a relaxed LTI system is h(n)=anu(n), |a|<1. What is the value of the step response of the system as n→∞? |
| A. | \(\frac{1}{1+a}\) |
| B. | \(\frac{1}{1-a}\) |
| C. | \(\frac{a}{1+a}\) |
| D. | \(\frac{a}{1-a}\) |
| Answer» C. \(\frac{a}{1+a}\) | |
| 3. |
If X+(z) is the one sided z-transform of the signal x(n), then \(\lim_{n \rightarrow \infty} x(n)=\lim_{z\rightarrow 1}(z-1) X^+(z)\) is called Final value theorem. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
If x(n)=an, then what is one sided z-transform of x(n+2)? |
| A. | \(\frac{z^{-2}}{1-az^{-1}}\) + a-1z-1 + a-2 |
| B. | \(\frac{z^{-2}}{1-az^{-1}}\) – a-1z-1 + a-2 |
| C. | \(\frac{z^2}{1-az^{-1}}\) + a z + z2 |
| D. | \(\frac{z^2}{1+az^{-1}}\) – z2 – az |
| Answer» E. | |
| 5. |
If x(n)=an, then what is one sided z-transform of x(n-2)? |
| A. | \(\frac{z^{-2}}{1-az^{-1}} + a^{-1}z^{-1} + a^{-2}\) |
| B. | \(\frac{z^{-2}}{1-az^{-1}} – a^{-1}z^{-1} + a^{-2}\) |
| C. | \(\frac{z^{-2}}{1-az^{-1}} + a^{-1}z^{-1} – a^{-2}\) |
| D. | \(\frac{z^{-2}}{1+az^{-1}} + a^{-1}z^{-1} + a^{-2}\) |
| Answer» B. \(\frac{z^{-2}}{1-az^{-1}} – a^{-1}z^{-1} + a^{-2}\) | |
| 6. |
The z-transform of a signal x(n) whose definition is given by \(X(z)=\sum_{n=0}^{\infty} x(n)z^{-n}\) is known as _____________ |
| A. | Unilateral z-transform |
| B. | Bilateral z-transform |
| C. | Rational z-transform |
| D. | None of the mentioned |
| Answer» B. Bilateral z-transform | |