MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Which steelmaking method gives the best creep properties? |
| A. | Induction |
| B. | Arc furnace |
| C. | Twin hearth |
| D. | Open hearth |
| Answer» B. Arc furnace | |
| 2. |
Which steel is preferred in creep conditions? |
| A. | Normalized |
| B. | Overaged |
| C. | Annealed |
| D. | Quenched |
| Answer» B. Overaged | |
| 3. |
Quenched steel have poor creep properties. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Fine grained structure is preferred always for creep conditions. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Sintered aluminum product can retain its strength up to about ___________ |
| A. | 0.2 T<sub>m</sub> |
| B. | 0.4 T<sub>m</sub> |
| C. | 0.6 T<sub>m</sub> |
| D. | 0.9 T<sub>m</sub> |
| Answer» E. | |
| 6. |
Which compounds are widely used as second phase dispersoids? |
| A. | Borides |
| B. | Aluminides |
| C. | Silisides |
| D. | Oxides |
| Answer» E. | |
| 7. |
What is service temperature limitation for precipitation hardened alloys? |
| A. | Melting temperature |
| B. | Solvus temperature |
| C. | Recrystallization temperature |
| D. | Growth temperature |
| Answer» C. Recrystallization temperature | |
| 8. |
Which element gives highest strain ageing effect in steel? |
| A. | C |
| B. | N |
| C. | Mo |
| D. | Al |
| Answer» C. Mo | |
| 9. |
Which element have the least effect on increase creep resistant in aluminum? |
| A. | Mn |
| B. | Fe |
| C. | Cu |
| D. | Cr |
| Answer» D. Cr | |
| 10. |
Which of the following elements gives a maximum increase in recrystallization temperature in Al? |
| A. | Si |
| B. | Mg |
| C. | Cu |
| D. | Mn |
| Answer» E. | |
| 11. |
When does annealed condition is preferred over cold worked condition? |
| A. | At low temperature |
| B. | For short holding time |
| C. | Very high temperature |
| D. | For medium temperature |
| Answer» D. For medium temperature | |
| 12. |
__________ favors low creep rate. |
| A. | Low E |
| B. | High diffusivity |
| C. | Low SFE |
| D. | High stress |
| Answer» D. High stress | |
| 13. |
Sherby and Burke equation shows that ___________ diffusivity and ___________ E favors low creep rate. |
| A. | High, high |
| B. | High, low |
| C. | Low, high |
| D. | Low, low |
| Answer» D. Low, low | |
| 14. |
BCC metals have ___________ stacking fault energy. |
| A. | Zero |
| B. | Very low |
| C. | Medium |
| D. | Very high |
| Answer» E. | |
| 15. |
____________ favors the creep resistance of the metal. |
| A. | Lower SFE |
| B. | High temperature |
| C. | High stress |
| D. | Pre-strain |
| Answer» B. High temperature | |