MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 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. |
Permanent magnets used for DC motors because of: |
| A. | High residual flux density |
| B. | High coercivity |
| C. | Both a and b |
| D. | Retentivity |
| Answer» D. Retentivity | |
| 2. |
DC motors are constructed using: |
| A. | Permanent Magnet |
| B. | Electromagnet. |
| C. | Magnets are not used |
| D. | Plastics |
| Answer» B. Electromagnet. | |
| 3. |
Assertion (A): Pneumatic actuators are not as messy as hydraulic ones.Reason (R): Pneumatic suffer from leakages and inherent inaccuracies. |
| A. | Both A and R are true and R is correct explanation of A |
| B. | Both A and R are true but R is not correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» C. A is true but R is false | |
| 4. |
DC motors can be modeled as: |
| A. | Armature controlled |
| B. | Field Controlled |
| C. | Both a and b |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
Electric actuators for stepped motion are known as stepper motor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
High torque/inertia ratio means: |
| A. | Stalled torque |
| B. | Stalled inertia |
| C. | Stalled toque/inertia ratio |
| D. | Lower motor time constant |
| Answer» E. | |
| 7. |
The torque developed by the motor when stationary with the full applied voltage__________ |
| A. | Stalled torque |
| B. | Torque |
| C. | Force |
| D. | Couple |
| Answer» B. Torque | |
| 8. |
Low power DC and AC motors are also known as _________ |
| A. | Servomotors |
| B. | Tachogenerators |
| C. | A.C. generators |
| D. | D.C. generators |
| Answer» B. Tachogenerators | |
| 9. |
Assertion (A): Electric actuators are used control system for high torque applications.Reason (R): Due to linear speed-Torque characteristics. |
| A. | Both A and R are true and R is correct explanation of A |
| B. | Both A and R are true but R is not correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are true but R is not correct explanation of A | |
| 10. |
Which of the motions in actuators are preferred: |
| A. | Translator |
| B. | Rotary |
| C. | Stationary |
| D. | Non-Stationary |
| Answer» C. Stationary | |
| 11. |
The chief advantage offered by the electronics is: |
| A. | Differencing and stable amplification by Op-Amp |
| B. | Stable amplification of power level by use of power transistor and SCR’s |
| C. | Differencing and stable amplification of power level by Op-Amp |
| D. | No amplification with the Op-Amp |
| Answer» D. No amplification with the Op-Amp | |
| 12. |
Low power transducers called sensors prefer: |
| A. | Linear relationship between controlled variable and output variable |
| B. | Non-functional relationship between controlled variable and output variable |
| C. | Non-linear relationship between controlled variable and output variable |
| D. | Not related with each other |
| Answer» B. Non-functional relationship between controlled variable and output variable | |