MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Behaviour knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
With an increase in temperature, elastic modulus of metals ____ and stiffness ____ |
| A. | increases, increases |
| B. | increases, decreases |
| C. | decreases, increases |
| D. | decreases, decreases |
| Answer» E. | |
| 2. |
Which statement is true regarding stiffer? |
| A. | A longer spring is stiffer |
| B. | A spring with thin wire is stiffer |
| C. | Copper wire spring is stiffer than steel wire spring |
| D. | A spring with a smaller diameter of coils is stiffer |
| Answer» E. | |
| 3. |
A stiff material is always of high strength. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
A material’s resistance to elastic deflection is known as ___ |
| A. | stiffness |
| B. | toughness |
| C. | hardness |
| D. | elasticity |
| Answer» B. toughness | |
| 5. |
WHICH_STATEMENT_IS_TRUE_REGARDING_STIFFER??$ |
| A. | A longer spring is stiffer |
| B. | A spring with thin wire is stiffer |
| C. | Copper wire spring is stiffer than steel wire spring |
| D. | A spring with a smaller diameter of coils is stiffer |
| Answer» E. | |
| 6. |
With_an_increase_in_temperature,_elastic_modulus_of_metals______and_stiffness_____$ |
| A. | increases, increases |
| B. | increases, decreases |
| C. | decreases, increases |
| D. | decreases, decreases |
| Answer» E. | |
| 7. |
A stiff material is always of high strength? |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Increasing the stiffness of material diminishes its impact strength. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Stiffness and strength of polymer ___ with an increase in the degree of crystallinity. |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | varies showing no relation to the degree of crystallinity |
| Answer» B. decreases | |
| 10. |
Plasticizers in polymers ___ toughness and ____ stiffness. |
| A. | increase, increase |
| B. | increase, decrease |
| C. | decrease, increase |
| D. | decrease, decrease |
| Answer» C. decrease, increase | |
| 11. |
How can stiffness of material be improved? |
| A. | By increasing the cross-sectional area |
| B. | By decreasing the cross-sectional area |
| C. | By increasing temperature |
| D. | By increasing the length of spring |
| Answer» B. By decreasing the cross-sectional area | |
| 12. |
What is the SI unit of stiffness? |
| A. | N/m |
| B. | N/m |
| C. | Nm<sup>2</sup> |
| D. | N |
| Answer» B. N/m | |
| 13. |
A material’s resistance to elastic deflection is known as ___$ |
| A. | stiffness |
| B. | toughness |
| C. | hardness |
| D. | elasticity |
| Answer» B. toughness | |
| 14. |
What is the inverse of stiffness? |
| A. | Hardness |
| B. | Stress |
| C. | Flexibility |
| D. | Toughness |
| Answer» D. Toughness | |