MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
Nabarro-Herring creep predicts a strain rate which is a function of _____ |
| A. | D |
| B. | D-2 |
| C. | D-3 |
| D. | D-1 |
| Answer» D. D-1 | |
| 2. |
Creep occurs only at high temperatures. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Which statement is correct regarding creep strength? |
| A. | Wrought materials have higher creep strength than cast materials |
| B. | With an increase in temperature, steady state creep rate decreases |
| C. | Creep strength can be improved by precipitation hardening |
| D. | Aromatic rings in polymer decrease creep strength |
| Answer» D. Aromatic rings in polymer decrease creep strength | |
| 4. |
Crosslinking in Polymers increases creep strength. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which of the following factors is inversely proportional to the magnitude of creep? |
| A. | Temperature |
| B. | Time |
| C. | Grain size |
| D. | Stress |
| Answer» D. Stress | |
| 6. |
WHICH_STATEMENT_IS_CORRECT_REGARDING_CREEP_STRENGTH??$ |
| A. | Wrought materials have higher creep strength than cast materials |
| B. | With an increase in temperature, steady state creep rate decreases |
| C. | Creep strength can be improved by precipitation hardening |
| D. | Aromatic rings in polymer decrease creep strength |
| Answer» D. Aromatic rings in polymer decrease creep strength | |
| 7. |
Nabarro-Herring creep predicts a strain rate which is a function of _____$ |
| A. | D |
| B. | D<sup>-2</sup> |
| C. | D<sup>-3</sup> |
| D. | D<sup>-1</sup> |
| Answer» D. D<sup>-1</sup> | |
| 8. |
Creep_occurs_only_at_high_temperatures.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Crosslinking in Polymers increases creep strength? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
With which factor, a magnitude of creep doesn’t increase?$ |
| A. | Temperature |
| B. | Time |
| C. | Grain size |
| D. | Stress |
| Answer» D. Stress | |
| 11. |
In _____ creep, atoms diffuse along grain boundaries and grains elongate in stress axis. |
| A. | Dislocation |
| B. | Nabarro-Herring |
| C. | Coble |
| D. | Solute drag |
| Answer» D. Solute drag | |
| 12. |
The ______ the melting point and the _____ the elastic modulus, the higher is creep strength. |
| A. | Lower, lower |
| B. | Lower, higher |
| C. | Higher, lower |
| D. | Higher, higher |
| Answer» E. | |
| 13. |
Which one of the following, is a static mechanical property? |
| A. | Impact strength |
| B. | Creep strength |
| C. | Fatigue strength |
| D. | Rebound hardness |
| Answer» C. Fatigue strength | |
| 14. |
Creep occurs due to sliding of _____ |
| A. | Vacancies |
| B. | Voids |
| C. | Grain boundaries |
| D. | Dislocations |
| Answer» D. Dislocations | |
| 15. |
Creep is a ____ dependent phenomenon. |
| A. | Temperature |
| B. | Time |
| C. | Load |
| D. | Stress cycle |
| Answer» C. Load | |
| 16. |
_____ occurs when metal is subjected to a constant tensile load at an elevated temperature? |
| A. | Fatigue |
| B. | Creep |
| C. | Impact |
| D. | Wear |
| Answer» C. Impact | |