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. |
The effect of hammer blow in a locomotive can be reduced by ______________ |
| A. | decreasing the speed |
| B. | using two or three pairs of wheels coupled together |
| C. | balancing whole of the reciprocating parts |
| D. | decreasing the speed and using two or three pairs of wheels coupled together |
| Answer» E. | |
| 2. |
The secondary unbalanced force produced by the reciprocating parts of a certain cylinder of a given engine with crank radius r and connecting rod length l can be considered as equal to primary unbalanced force produced by the same weight having |
| A. | an equivalent crank radius r2/4l and rotating at twice the speed of the engine |
| B. | r2/4l as equivalent crank radius and rotating at engine speed |
| C. | equivalent crank length of r2/4l and rotating at engine speed |
| D. | none of the mentioned |
| Answer» B. r2/4l as equivalent crank radius and rotating at engine speed | |
| 3. |
If all the masses are in one plane, then in which of the following condition is possible? |
| A. | Resultant only in horizontal |
| B. | Resultant only in vertical |
| C. | System remains unbalanced |
| D. | No limitation |
| Answer» E. | |
| 4. |
If the rotation speed of the shaft increases then the balancing mass must also increase. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
If all the masses are in one plane, then what is the maximum no. of masses which can be placed in the same plane? |
| A. | 3 |
| B. | 4 |
| C. | 6 |
| D. | No limitation |
| Answer» E. | |
| 6. |
From the given data, find the balancing mass’s inclination in degrees if r=0.2m required in the same plane.Masses = 200kg, 300kg, 240 kg, 260Kg, corresponding radii = 0.2m, 0.15m, 0.25m and 0.3m.Angles between consecutive masses = 45, 75 and 135 degrees. |
| A. | 201.48 |
| B. | 200.32 |
| C. | 210.34 |
| D. | 202.88 |
| Answer» B. 200.32 | |
| 7. |
Graphical method gives the best results. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
From the given data, find the balancing mass in Kg if r=0.2m required in the same plane.Masses = 200kg, 300kg, 240 kg, 260Kg, corresponding radii = 0.2m, 0.15m, 0.25m and 0.3m.Angles between consecutive masses = 45, 75 and 135 degrees. |
| A. | 116 |
| B. | 58 |
| C. | 232 |
| D. | 140 |
| Answer» B. 58 | |