MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Signals & Systems Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The CDF for a certain random variable is given as F(x) = {0, -∞ |
| A. | 100 |
| B. | 50 |
| C. | 1/50 |
| D. | 1/100 |
| Answer» E. | |
| 2. |
In the circuit given below, the value of ZL for maximum power to be transferred is _____________ |
| A. | R |
| B. | R + jωL |
| C. | R – jωL |
| D. | jωL |
| Answer» D. jωL | |
| 3. |
The system x(k) = 7(\(\frac{1}{3}\))k u(-k-1)-6(\(\frac{1}{2}\))k u(k) is ___________ |
| A. | Causal |
| B. | Anti-causal |
| C. | Non-causal |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 4. |
The area under Gaussian pulse \(\int_{-∞}^∞ e^{{-π}^{{t}^2}} \,dt \) is ___________ |
| A. | Unity |
| B. | Infinity |
| C. | Pulse |
| D. | Zero |
| Answer» B. Infinity | |
| 5. |
X1(z) = 2z + 1 + z-1 and X2(z) = z + 1 + 2z-1 is ________________ |
| A. | Even signal |
| B. | Odd signal |
| C. | In time power signal |
| D. | In time energy signal |
| Answer» E. | |
| 6. |
Given 2 signals (-3)k u(k) and u (k-1). These two signals are superimposed. This superimposed signal is _______________ |
| A. | \(\frac{z}{z+3} + \frac{1}{z-1}\) |
| B. | \(\frac{z}{z+3} – \frac{1}{z-1}\) |
| C. | \(\frac{z}{z-3} + \frac{1}{z-1}\) |
| D. | \(\frac{z}{z+3} + \frac{1}{z+1}\) |
| Answer» B. \(\frac{z}{z+3} – \frac{1}{z-1}\) | |
| 7. |
The value of z(ak u[-k]) is _______________ |
| A. | \(\frac{z}{z-a}\) |
| B. | \(\frac{z}{a-z}\) |
| C. | \(\frac{z^2}{z-a}\) |
| D. | \(\frac{a}{a-z}\) |
| Answer» C. \(\frac{z^2}{z-a}\) | |
| 8. |
The z-transform of –u(-n-1) is ___________ |
| A. | \(\frac{1}{1-z}\) |
| B. | \(\frac{z}{1-z}\) |
| C. | \(\frac{1}{1-z^{-1}}\) |
| D. | \(\frac{z}{1-z^{-1}}\) |
| Answer» D. \(\frac{z}{1-z^{-1}}\) | |
| 9. |
If H(f) = \(\frac{y(t)}{x(t)}\), then for this to be true x(t) is ___________ |
| A. | exp\((\frac{j2nf}{t})\) |
| B. | exp\((-\frac{j2nf}{t})\) |
| C. | exp(j2nft) |
| D. | exp(-j2nft) |
| Answer» D. exp(-j2nft) | |
| 10. |
Given a system function H(s) = \(\frac{1}{s+3}\). Let us consider a signal sin 2t. Then the steady state response is ___________ |
| A. | \(\frac{1}{8}\) |
| B. | Infinite |
| C. | 0 |
| D. | 8 |
| Answer» D. 8 | |