MCQOPTIONS
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MCQOPTIONS
This section includes 6 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 flywheel of a steam engine has a mass moment of inertia of 2500 Kg-m2. The starting torque of the steam engine is 1500 N-m and may be assumed constant, using this data find the angular acceleration of the flywheel in rad/s2. |
| A. | 0.4 |
| B. | 0.6 |
| C. | 0.3 |
| D. | 1.2 |
| Answer» B. 0.6 | |
| 2. |
In the turning moment diagram of a multicylinder engine, the work done during exhaust stroke is by ______ |
| A. | The gases |
| B. | On the gases |
| C. | Piston wall |
| D. | Valve |
| Answer» C. Piston wall | |
| 3. |
For a 4 cylinder engine, if the minimum speed of the engine is half the maximum speed, then coefficient of fluctuation is _________ |
| A. | 0.5 |
| B. | 1.5 |
| C. | 2 |
| D. | 0.66 |
| Answer» E. | |
| 4. |
For a multicylinder engine, the coefficient of fluctuation of speed would vary with _________ |
| A. | Number of cylinders |
| B. | Remains unaffected |
| C. | Length of connecting rod |
| D. | Input temperature |
| Answer» C. Length of connecting rod | |
| 5. |
Consider a three cylinder engine, the resultant turning moment diagram is the _____ of three cylinders. |
| A. | Sum |
| B. | Difference |
| C. | Product |
| D. | Independent |
| Answer» B. Difference | |
| 6. |
For a multicylinder engine, the moment of inertia of a flywheel is 6500 kg-m2, from the turning moment diagram, it is found that fluctuation of energy is 56000 N-m, if mean speed is 120 rpm, then find maximum speed. |
| A. | 121 |
| B. | 119 |
| C. | 122 |
| D. | 118 |
| Answer» B. 119 | |