MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A muff coupling is connecting two shafts. The torque involved is 650N-m. The shaft diameter is 45mm with length and height of the key being 14mm and 80mm respectively. Find the compressive stress induced in the key. |
| A. | 70.1 N/mm² |
| B. | 51.6N/mm² |
| C. | 45.5N/mm² |
| D. | None of the listed |
| Answer» C. 45.5N/mm² | |
| 2. |
A machine started malfunctioning due to some issues with the coupling. The coupling emplaced in the machine was Oldham. The only coupling available in the workshop is Hooke’s coupling. So Oldham coupling can be replaced by Hooke’s coupling. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
A_MUFF_COUPLING_IS_CONNECTING_TWO_SHAFTS._THE_TORQUE_INVOLVED_IS_650N-M._THE_SHAFT_DIAMETER_IS_45MM_WITH_LENGTH_AND_HEIGHT_OF_THE_KEY_BEING_14MM_AND_80MM_RESPECTIVELY._FIND_THE_COMPRESSIVE_STRESS_INDUCED_IN_THE_KEY.?$ |
| A. | 70.1 N/mm² |
| B. | 51.6N/mm² |
| C. | 45.5N/mm² |
| D. | None of the listed |
| Answer» C. 45.5N/mm¬¨¬®‚Äö√¢¬ß | |
| 4. |
Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? |
| A. | Maximum shear stress theory |
| B. | Distortion energy theory |
| C. | Both give equal values |
| D. | Vary from material to material |
| Answer» C. Both give equal values | |
| 5. |
Distortion energy theorem is not recommended for ductile materials. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
The region of safety for biaxial stresses is of which shape in the case of maximum distortion energy theorem. |
| A. | Ellipse |
| B. | Circle |
| C. | Rectangle |
| D. | Square |
| Answer» B. Circle | |
| 7. |
A muff coupling is connecting two shafts. The torque involved is 650N-m. The shaft diameter is 45mm with length and breadth of the key being 14mm and 80mm respectively. Find the shear stress induced in the key. |
| A. | 30.2N/mm² |
| B. | 25.8N/mm² |
| C. | 34.4N/mm² |
| D. | None of the listed |
| Answer» C. 34.4N/mm¬¨¬®‚Äö√¢¬ß | |
| 8. |
A machine started malfunctioning due to some issues with the coupling. The coupling emplaced in the machine was Oldham. The only coupling available in the workshop is Hooke’s coupling. So Oldham coupling can be replaced by Hooke’s coupling.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Oldham coupling i used to connect two shafts having intersecting axes. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
In distortion energy theorem, if a unit cube is subjected to biaxial stress, then S(yt) is given by which of the following? |
| A. | √ (σ₁²- σ₁σ₂ +σ₂²) |
| B. | σ₁²- σ₁σ₂ +σ₂² |
| C. | √ (σ₁²+ σ₁σ₂ +σ₂²) |
| D. | σ₁²+ σ₁σ₂ +σ₂² |
| Answer» B. ‚âà√¨‚àö√¢‚Äö√Ñ√∂‚àö√°‚àö√ñ¬¨¬®‚Äö√¢¬ß- ‚âà√¨‚àö√¢‚Äö√Ñ√∂‚àö√°‚àö√ñ‚âà√¨‚àö√¢‚Äö√Ñ√∂‚àö√°‚àö√° +‚âà√¨‚àö√¢‚Äö√Ñ√∂‚àö√°‚àö√°¬¨¬®‚Äö√¢¬ß | |
| 11. |
A coupling is a mechanical device that temporarily joins two rotating shafts to each other. |
| A. | True |
| B. | False |
| Answer» C. | |