MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 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. |
The open loop transfer function of a plant is given as, G(s) =1/s^2-1. If the plant is operated in unity feedback configuration, then the lead compensator that can stabilize the control system is: |
| A. | 10(s-1)/(s+2) |
| B. | 10(s+4)/(s+2) |
| C. | 10(s+2)/(s+10) |
| D. | 10(s+2)/(s+10) |
| Answer» B. 10(s+4)/(s+2) | |
| 2. |
A composite R-C network yielded the following transfer function when calculated from its components:T(s) = 1+21s+20s2/1+11s+10s2. This network can be used as which one of the following? |
| A. | Phase lead compensator |
| B. | Phase lag compensator |
| C. | Lag lead compensator |
| D. | None of the mentioned |
| Answer» B. Phase lag compensator | |
| 3. |
Consider the following systems:System 1: G(s) =1/ (2s+1) and System 2: G(s) =1/ (5s+1)The true statement regarding the system is: |
| A. | Bandwidth of the system 1 is greater than the bandwidth of the system 2 |
| B. | Bandwidth of the system 1 is lower than the bandwidth of the system 2 |
| C. | Bandwidth of both the systems are same |
| D. | Bandwidth of both the systems are infinite |
| Answer» B. Bandwidth of the system 1 is lower than the bandwidth of the system 2 | |
| 4. |
Operations performed by electronic controllers: |
| A. | Flexible operations |
| B. | High torque high speed operations |
| C. | Fire and explosion proof operation |
| D. | All of the mentioned |
| Answer» B. High torque high speed operations | |
| 5. |
Operations performed by hydraulic controllers: |
| A. | Flexible operations |
| B. | High torque high speed operations |
| C. | Fire and explosion proof operation |
| D. | All of the mentioned |
| Answer» C. Fire and explosion proof operation | |
| 6. |
A_COMPOSITE_R-C_NETWORK_YIELDED_THE_FOLLOWING_TRANSFER_FUNCTION_WHEN_CALCULATED_FROM_ITS_COMPONENTS:?$ |
| A. | = 1+21s+20s<sup>2</sup>/1+11s+10s<sup>2</sup>. This network can be used as which one of the following? |
| B. | Phase lead compensator |
| C. | Phase lag compensator |
| D. | Lag lead compensator |
| Answer» B. Phase lead compensator | |
| 7. |
The open loop transfer function of a plant is given as, G(s) =1/s^2-1. If the plant is operated in unity feedback configuration, then the lead compensator that can stabilize the control system is:$ |
| A. | 10(s-1)/(s+2) |
| B. | 10(s+4)/(s+2) |
| C. | 10(s+2)/(s+10) |
| D. | 10(s+2)/(s+10) |
| Answer» B. 10(s+4)/(s+2) | |
| 8. |
What is the effect of phase lag compensation on the performance of a servo system? |
| A. | For a given relative stability, the velocity constant is increased |
| B. | For a given relative stability, the velocity constant is decreased |
| C. | The bandwidth of the system is increased |
| D. | The time response is made faster |
| Answer» B. For a given relative stability, the velocity constant is decreased | |
| 9. |
With regard to the filtering capacity the lead compensator and lag compensator are respectively: |
| A. | Low pass and high pass filter |
| B. | High pass and low pass filter |
| C. | Both high pass filter |
| D. | Both low pass filters |
| Answer» C. Both high pass filter | |
| 10. |
Consider the following systems: |
| A. | =1/ (2s+1) and System 2: G(s) =1/ (5s+1) |
| B. | |
| C. | Bandwidth of the system 1 is greater than the bandwidth of the system 2 |
| Answer» B. | |
| 11. |
The compensator G(s) =5(1+0.3s)/1+0.1s would provide a maximum phase shift of: |
| A. | 20° |
| B. | 30° |
| C. | 45° |
| D. | 60° |
| Answer» C. 45¬¨¬®‚Äö√†√ª | |
| 12. |
Operations performed by pneumatic controllers: |
| A. | Flexible operations |
| B. | High torque high speed operations |
| C. | Fire and explosion proof operation |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 13. |
Which of the following is not the correct reason to select feedback compensation over cascaded one? |
| A. | No amplification is required as the energy transfer is from higher to lower level. |
| B. | Suitable devices are not available for compensation(series) |
| C. | It is economical |
| D. | Provides greater stiffness against load disturbances |
| Answer» D. Provides greater stiffness against load disturbances | |