MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
For which of the following dynamometers the driving torque on the shaft is not uniform and it is subjected to severe oscillations? |
| A. | Pony brake |
| B. | Band brake |
| C. | Belt transmission |
| D. | Epicyclic train |
| Answer» B. Band brake | |
| 2. |
For a rope brake dynamometer, the flywheel is cooled with soapy water because________ |
| A. | Energy is absorbed by the dynamometer |
| B. | Energy is used to do work |
| C. | Energy is provided by the motor |
| D. | Energy supplied is more |
| Answer» B. Energy is used to do work | |
| 3. |
Flywheel diameter 1.2 m; diameter of the rope 12.5 mm; engine speed 400 r.p.m.; dead load on the brake 600 N; spring balance reading 150 N. Using this data, calculate the brake power of the engine in kW. |
| A. | 12.82 |
| B. | 11.43 |
| C. | 13.64 |
| D. | 10.22 |
| Answer» C. 13.64 | |
| 4. |
Flywheel diameter 1.2 m; diameter of the rope 12.5 mm; engine speed 200 r.p.m.; dead load on the brake 600 N; spring balance reading 150 N. Using this data, calculate the brake power of the engine in kW. |
| A. | 5.715 |
| B. | 5.525 |
| C. | 6.125 |
| D. | 5.625 |
| Answer» B. 5.525 | |
| 5. |
In which of the following dynamometers does the energy produced by the engine is used for doing work? |
| A. | Prony brake dynamometer |
| B. | Rope brake dynamometer |
| C. | Absorption dynamometer |
| D. | Epicyclic train dynamometer |
| Answer» E. | |
| 6. |
In which of the following dynamometers does the entire energy or power produced by the engine is absorbed by the friction resistances of the brake? |
| A. | Prony brake dynamometer |
| B. | Torsional dynamometer |
| C. | Epicyclic train dynamometer |
| D. | Belt transmission dynamometer |
| Answer» B. Torsional dynamometer | |
| 7. |
Prony brake dynamometer is an absorption dynamometer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Which of the following is a characteristic feature of a dynamometer? |
| A. | It can measure torque |
| B. | It can measure frictional resistance |
| C. | It can measure the balancing force |
| D. | It can act as a speedometer |
| Answer» C. It can measure the balancing force | |