MCQOPTIONS
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MCQOPTIONS
This section includes 58 Mcqs, each offering curated multiple-choice questions to sharpen your Control Systems knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The parameter which is constant along the constant N circle : |
| A. | Frequency |
| B. | Phase angle |
| C. | Magnitude |
| D. | Open loop gain |
| Answer» C. Magnitude | |
| 52. |
The phase angle of the system, G(s) =s+5/s2+4s+9, varies between : |
| A. | 0° and 90° |
| B. | 0° and -90° |
| C. | 0° and -180° |
| D. | -90° and -180° |
| Answer» B. 0° and -90° | |
| 53. |
In polar plots, what does each and every point represent w.r.t magnitude and angle? |
| A. | Scalar |
| B. | Vector |
| C. | Phasor |
| D. | Differentiator |
| Answer» D. Differentiator | |
| 54. |
The important figures of merit to the system in frequency domain are : |
| A. | Maximum value of resonant peak |
| B. | Value of resonance frequency |
| C. | Maximum value of resonant peak and Value of resonance frequency |
| D. | Minimum value of resonance frequency |
| Answer» D. Minimum value of resonance frequency | |
| 55. |
Due to an addition of pole at origin, the polar plot gets shifted by ___ at ω = 0 ? |
| A. | -45° |
| B. | -60° |
| C. | -90° |
| D. | -180° |
| Answer» D. -180° | |
| 56. |
The phase margin (in degrees) of a system having the loop transfer function G(s) H(s)=2√3/s(s+1) is: |
| A. | 45° |
| B. | -30° |
| C. | 60° |
| D. | 30° |
| Answer» E. | |
| 57. |
Phase and gain margin are applicable to open and closed loop systems both. |
| A. | True |
| B. | False |
| Answer» C. | |
| 58. |
Feedback can cause a system that is originally stable to become___________ |
| A. | Stable |
| B. | Unstable |
| C. | Conditionally stable |
| D. | Either more stable or unstable |
| Answer» E. | |