MCQOPTIONS
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MCQOPTIONS
This section includes 18 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. |
Spiral spring is quite rigid. |
| A. | Yes |
| B. | No it is flexible |
| C. | It is of moderate rigidity |
| D. | Rigidity can’t be determined |
| Answer» C. It is of moderate rigidity | |
| 2. |
Surge is a desirable effect in the sprigs. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Surge is caused by resonance effect in the spring. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
FOR_A_HELICAL_TORSION_SPRIG,_THE_STRESS_CONCENTRATION_FACTOR_AT_INNER_FIBRE_IS?_GIVE_SPRING_INDEX=5.?$ |
| A. | 1.005 |
| B. | 1.175 |
| C. | 1.223 |
| D. | 1.545 |
| Answer» C. 1.223 | |
| 5. |
SURGE_IS_A_DESIRABLE_EFFECT_IN_THE_SPRIGS.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Spiral spring is quite rigid.$ |
| A. | Yes |
| B. | No it is flexible |
| C. | It is of moderate rigidity |
| D. | Rigidity can’t be determined |
| Answer» C. It is of moderate rigidity | |
| 7. |
For a helical torsion sprig, the stress concentration factor at outer fibre is? Give spring index=5.$ |
| A. | 0.78 |
| B. | 0.87 |
| C. | 1.87 |
| D. | 0.69 |
| Answer» C. 1.87 | |
| 8. |
Angle of rotation o arbour with respect to drum is given by? |
| A. | None of the listed |
| B. | 12ML/Ebtᵌ |
| C. | 8 ML/Ebtᵌ |
| D. | 16ML/Ebtᵌ |
| Answer» C. 8 ML/Ebt¬¨‚à묨¬µ‚àö‚Ä¢ | |
| 9. |
Calculate the bending stress induced in the strip of the helical spring. The spring is subjected to a moment of 1250N-mm with breadth and thickens of the strip being 11mm and 1.5mmm respectively. |
| A. | 508.8N/mm² |
| B. | 612.2N/mm² |
| C. | 606.1N/mm² |
| D. | 564.3N/mm² |
| Answer» D. 564.3N/mm¬¨¬®‚Äö√¢¬ß | |
| 10. |
The strip of spiral spring is never subjected to pure bending moment. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Surge is caused by resonance effect in the spring? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
What will happen if stresses induced due to surge in the spring exceeds the endurance limit stress of the spring. |
| A. | Fatigue Failure |
| B. | Fracture |
| C. | None of the listed |
| D. | Nipping |
| Answer» B. Fracture | |
| 13. |
Two spring having stiffness constants of 22N/mm and 25N/mm are connected in parallel. They are to be replaced by a single spring to have same effect. The stiffness of that spring will be? |
| A. | None of the mentioned. |
| B. | 3N/mm |
| C. | 47N/mm |
| D. | 11.7N/mm |
| Answer» D. 11.7N/mm | |
| 14. |
If the spring have same solid length and number of coils in the two springs are 8 and 10, then find the diameter of the spring with 8 coils. It is given diameter of spring with 10 coils is 12mm. |
| A. | 9.6mm |
| B. | 9mm |
| C. | 12mm |
| D. | 15mm |
| Answer» C. 12mm | |
| 15. |
A concentric spring consists of 2 sprigs of diameter 10mm and 4mm. The net force acting on the composite spring is 5000N. Find the force acting on each of the two springs. |
| A. | 1232.2N and 3767.8N |
| B. | 786.4N and 4213.6N |
| C. | 689.7N and 4310.3N |
| D. | 645.3N and 4354.7N |
| Answer» D. 645.3N and 4354.7N | |
| 16. |
The load shared by each spring is inversely proportional to the cross section of wire. |
| A. | Yes |
| B. | No, it is directly proportional |
| C. | It is proportional to its square |
| D. | It is proportional to its square root |
| Answer» C. It is proportional to its square | |
| 17. |
Can concentric springs be used to obtain a force which is not proportional to its deflection? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
In concentric springs, vibrations called surge are amplified. |
| A. | True |
| B. | False |
| Answer» C. | |