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. |
In a slider crank mechanism, the length of the crank and connecting rod are 180 mm and 540 mm respectively. The crank position is 45 from inner dead centre. The crank shaft speed is 450 r.p.m. (clockwise), calculate angular velocity of the connecting rod in rad/s. |
| A. | 10.3 |
| B. | 11.1 |
| C. | 12.2 |
| D. | 11.8 |
| Answer» C. 12.2 | |
| 2. |
While calculating angular acceleration of the connecting rod, sin2( ) term is neglected. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
In a slider crank mechanism, the length of the crank and connecting rod are 150 mm and 600 mm respectively. The crank position is 60 from inner dead centre. The crank shaft speed is 400 r.p.m. (clockwise). Velocity of the slider is ________ |
| A. | 6.9 m/s |
| B. | 6.12 m/s |
| C. | 7.32 m/s |
| D. | 6.66 m/s |
| Answer» C. 7.32 m/s | |
| 4. |
Which of the following expression represent the angular acceleration of the connecting rod? |
| A. | <sup>2</sup> . sin /n |
| B. | <sup>2</sup> . cos .n |
| C. | <sup>2</sup>. cos /n |
| D. | <sup>2</sup> . sin .n |
| Answer» B. <sup>2</sup> . cos .n | |
| 5. |
From the data given:
|
| A. | nDetermine the acceleration in m/s<sup>2</sup> of the piston for the same position(angle 40 degrees from IDC). |
| B. | 59.27 |
| C. | 55.25 |
| D. | 65.3 |
| E. | 50.41 |
| Answer» B. 59.27 | |
| 6. |
The crank and connecting rod of a steam engine are 0.3 m and 1.5 m in length. The crank rotates at 150 r.p.m. clockwise, determine velocity of the piston when the crank is at an angle 40 degrees from IDC. |
| A. | 4.19 |
| B. | 5 |
| C. | 3.49 |
| D. | 3.36 |
| Answer» D. 3.36 | |
| 7. |
If the crank and the connecting rod are 600 mm and 2 m long respectively and the crank rotates at a constant speed of 250 r.p.m, determine maximum velocity of the piston in m/s is _____ |
| A. | 15 |
| B. | 17.5 |
| C. | 20 |
| D. | 10.5 |
| Answer» C. 20 | |
| 8. |
If the crank and the connecting rod are 300 mm and 1 m long respectively and the crank rotates at a constant speed of 250 r.p.m., determine the crank angle at which the maximum velocity occurs is ____ |
| A. | 45 |
| B. | 75 |
| C. | 90 |
| D. | 60 |
| Answer» C. 90 | |