MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Disk brakes largely suffer from the problem of self-locking. |
| A. | Yes |
| B. | No |
| C. | Self-locking but it depends on radius of the wheel rotating |
| D. | Material dependent |
| Answer» C. Self-locking but it depends on radius of the wheel rotating | |
| 2. |
Loss of torque transmitting capacity at high temperatures is called |
| A. | Fading |
| B. | Rolling |
| C. | Drifting |
| D. | Planking |
| Answer» B. Rolling | |
| 3. |
In drum brakes, as the temperature increases coefficient of friction ______ |
| A. | increases |
| B. | decreases |
| C. | remains same |
| D. | Can’t be determined |
| Answer» E. | |
| 4. |
Disk brakes have low torque transmitting capacity in high volumes. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
IN_DRUM_BRAKES,_AS_THE_TEMPERATURE_INCREASES_COEFFICIENT_OF_FRICTION_______?$ |
| A. | increases |
| B. | decreases |
| C. | remains same |
| D. | Can’t be determined |
| Answer» E. | |
| 6. |
Disk brakes largely suffer from the problem of self-locking.$ |
| A. | Yes |
| B. | No |
| C. | Self-locking but it depends on radius of the wheel rotating |
| D. | Material dependent |
| Answer» C. Self-locking but it depends on radius of the wheel rotating | |
| 7. |
Loss_of_torque_transmitting_capacity_at_high_temperatures_is_called$ |
| A. | Fading |
| B. | Rolling |
| C. | Drifting |
| D. | Planking |
| Answer» B. Rolling | |
| 8. |
The disk brake torque is linearly proportional to the actuating force. |
| A. | Yes |
| B. | No, it is proportional to its square |
| C. | Proportional to its cube |
| D. | Independent of force |
| Answer» B. No, it is proportional to its square | |
| 9. |
Disk brakes can be used for opposite rotation of disk also. |
| A. | No they are effective for one direction of motion only |
| B. | They can be used |
| C. | Poor efficiency in opposite direction |
| D. | None of the listed |
| Answer» B. They can be used | |
| 10. |
Disk brakes have low torque transmitting capacity in high volumes? |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Calculate the braking torque if tension in the two sides is 3500N and 1980N with radius of drum being 160mm. |
| A. | None of the mentioned |
| B. | 243.20N-m |
| C. | 223.4N-m |
| D. | 278.6N-m |
| Answer» C. 223.4N-m | |
| 12. |
The wear of band brake is even. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
Band brakes require _____ maintenance. |
| A. | Little |
| B. | Zero |
| C. | Much |
| D. | None of the listed |
| Answer» B. Zero | |
| 14. |
Band brake has complex construction with large number of parts. |
| A. | Yes |
| B. | It has simple construction |
| C. | It has simple constructions but large number of parts |
| D. | It has complicated construction but small number of parts |
| Answer» C. It has simple constructions but large number of parts | |
| 15. |
A self-locking differential brake and back stop brakes is same thing. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
Is it possible to prevent back rotation of drum? |
| A. | Yes by using back stop brake |
| B. | No |
| C. | Depends on the angular velocity |
| D. | Only in some specific cases |
| Answer» B. No | |
| 17. |
In both simple band brake and differential band brake, at least one end of the band passes through fulcrum. |
| A. | Both the ends |
| B. | Neither end |
| C. | One end |
| D. | None of the listed |
| Answer» C. One end | |