MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Control Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A sequence x (n) with the z-transform X (z) = Z4 + Z2 2z + 2 3Z-4 is applied to an input to a linear time invariant system with the impulse response h (n) = 2 (n-3). The output at n = 4 will be: |
| A. | t-6 |
| B. | tZero |
| C. | t2 |
| D. | t-4 |
| Answer» C. t2 | |
| 2. |
If the region of convergence of x1[n]+x2[n] is 1/>|z|<2/3, the region of convergence of x1[n]-x2[n] includes: |
| A. | t1/3>|z|<3 |
| B. | t2/3>|z|<3 |
| C. | t3/2>|z|<3 |
| D. | t1/3>|z|<2/3 |
| Answer» E. | |
| 3. |
Two sequences x1 (n) and x2 (n) are related by x2 (n) = x1 (- n). In the z- domain, their ROC s are |
| A. | tThe same |
| B. | tReciprocal of each other |
| C. | tNegative of each other |
| D. | tComplements of each other |
| Answer» C. tNegative of each other | |
| 4. |
The frequency of a continuous time signal x (t) changes on transformation from x (t) to x ( t), > 0 by a factor |
| A. | t |
| B. | t1/ |
| C. | t <sup>2</sup> |
| D. | t |
| Answer» B. t1/ | |