MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
An Internal combustion engine has a connecting rod of mass 2 kg and the distance between the centre of crank and centre of gudgeon pin is 25 cm. The Center of Gravity lies at a point 10 cm from the gudgeon pin along the line of centres. The radius of gyration of this system about an axis through the Center of Gravity perpendicular to the plane of rotation is 11 cm. If two masses are used instead of the connecting rod, one at the gudgeon pin and other at the crank pin, if the angular acceleration of the rod is 23 000 rad/s2, then find the correction couple in N-m. |
| A. | 140.2 |
| B. | 133.4 |
| C. | 136.8 |
| D. | 135.6 |
| Answer» C. 136.8 | |
| 2. |
Mass moment of inertia of two arbitrary masses placed will be same as the mass moment inertia of the rigid body. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
An Internal combustion engine has a connecting rod of mass 2 kg and the distance between the centre of crank and centre of gudgeon pin is 25 cm. The Center of Gravity lies at a point 10 cm from the gudgeon pin along the line of centres. The radius of gyration of this system about an axis through the Center of Gravity perpendicular to the plane of rotation is 11 cm. If two masses are used instead of the connecting rod, one at the gudgeon pin and other at the crank pin. What will be the new radius of gyration? |
| A. | 0.212m |
| B. | 0.122m |
| C. | 0.1m |
| D. | 0.145m |
| Answer» C. 0.1m | |
| 4. |
An Internal combustion engine has a connecting rod of mass 2 kg and the distance between the centre of crank and centre of gudgeon pin is 25 cm. The Center of Gravity lies at a point 10 cm from the gudgeon pin along the line of centres. The radius of gyration of this system about an axis through the Center of Gravity perpendicular to the plane of rotation is 11 cm. Find the mass located at gudgeon pin in Kg. |
| A. | 0.9 |
| B. | 0.8 |
| C. | 1.1 |
| D. | 1.2 |
| Answer» D. 1.2 | |
| 5. |
The correction couple does not depend on _________ |
| A. | Distance between arbitrary masses |
| B. | Distance between the two masses for a true dynamically equivalent system |
| C. | Radius of gyration of equivalent system |
| D. | Distance between fixed masses |
| Answer» E. | |
| 6. |
The sum of torques required to accelerate a 2 mass system and to accelerate a rigid body is called correction couple. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Correction couple is applied when masses are placed arbitrarily and to maintain _________ |
| A. | Static equilibrium |
| B. | Dynamic equilibrium |
| C. | Stable equilibrium |
| D. | Unstable equilibrium |
| Answer» C. Stable equilibrium | |