MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Dynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A spring controlled governor is said to be isochronous when the controlling force |
| A. | increases as the radius of rotation decreases |
| B. | increases as the radius of rotation increases |
| C. | decreases as the radius of rotation decreases |
| D. | remains constant for all radii of rotation |
| Answer» E. | |
| 2. |
The controlling force diagram for a spring controlled governor is a curve passing through the origin. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
A_SPRING_CONTROLLED_GOVERNOR_IS_FOUND_UNSTABLE._IT_CAN_BE_MADE_STABLE_BY?$ |
| A. | increasing the spring stiffness |
| B. | decreasing the spring stiffness |
| C. | increasing the ball mass |
| D. | decreasing the ball mass |
| Answer» C. increasing the ball mass | |
| 4. |
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis$ |
| A. | at the origin |
| B. | below the origin |
| C. | above the origin |
| D. | any of the mentioned |
| Answer» C. above the origin | |
| 5. |
In a spring controlled governor, when the controlling force _____________ as the radius of rotation increases, it is said to be a stable governor. |
| A. | remains constant |
| B. | decreases |
| C. | increases |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 6. |
A spring controlled governor is said to be unstable when the controlling force |
| A. | increases as the radius of rotation decreases |
| B. | increases as the radius of rotation increases |
| C. | decreases as the radius of rotation decreases |
| D. | remains constant for all radii of rotation |
| Answer» D. remains constant for all radii of rotation | |
| 7. |
For the isochronous Porter governor, the controlling force curve is a straight line passing through the origin. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
The effort of a Porter governor is equal to |
| A. | c(m – M)g |
| B. | c(m + M)g |
| C. | C/(m + M)g |
| D. | g |
| Answer» C. C/(m + M)g | |
| 9. |
Power of a governor is the |
| A. | mean force exerted at the sleeve for a given percentage change of speed |
| B. | workdone at the sleeve for maximum equilibrium speed |
| C. | mean force exerted at the sleeve for maximum equilibrium speed |
| D. | none of the mentioned |
| Answer» E. | |