MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 18 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. |
Transition temperature is defined at 50% fibrous fracture. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Transition range is 0.5 – 0.7 Tm for metals. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Sharper the notch in a specimen, the higher will be the _________ and low the _________ |
| A. | Crystallization temperature, Impact toughness. |
| B. | Transition temperature, impact toughness |
| C. | Transition temperature, Fracture stress |
| D. | Crystallization temperature, fracture stress |
| Answer» C. Transition temperature, Fracture stress | |
| 4. |
What is the transition temperature range for ceramics? |
| A. | 0.1 – 0.2 Tm |
| B. | 0.3 – 0.5 Tm |
| C. | 0.5 – 0.7 Tm |
| D. | 0.7 – 0.9 Tm |
| Answer» D. 0.7 – 0.9 Tm | |
| 5. |
With increasing ___________ material’s amount of deformation which can be achieved decreases. |
| A. | Temperature |
| B. | Slip systems |
| C. | Strain rate |
| D. | Vacancies |
| Answer» D. Vacancies | |
| 6. |
On increasing temperature, a material tends to loose its ability to resists plastic deformation is due to decrease in _________________ |
| A. | Tensile stress |
| B. | Yield stress |
| C. | Compressive stress |
| D. | Shear stress |
| Answer» C. Compressive stress | |
| 7. |
WHAT_IS_THE_TRANSITION_TEMPERATURE_RANGE_FOR_CERAMICS??$ |
| A. | 0.1 – 0.2 T<sub>m</sub> |
| B. | 0.3 – 0.5 T<sub>m</sub> |
| C. | 0.5 – 0.7 T<sub>m</sub> |
| D. | 0.7 – 0.9 T<sub>m</sub> |
| Answer» D. 0.7 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.9 T<sub>m</sub> | |
| 8. |
Transition range is 0.5 – 0.7 Tm for metals.$# |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Sharper_the_notch_in_a_specimen,_the_higher_will_be_the___________and_low_the__________$ |
| A. | Crystallization temperature, Impact toughness. |
| B. | Transition temperature, impact toughness |
| C. | Transition temperature, Fracture stress |
| D. | Crystallization temperature, fracture stress |
| Answer» C. Transition temperature, Fracture stress | |
| 10. |
Transition_temperature_is_defined_at_50%_fibrous_fracture. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
What is the reason for Ductile-Brittle transition in BCC materials? |
| A. | Cracks |
| B. | Compressive stresses |
| C. | Peierls-Nabarro stress |
| D. | Vacancies |
| Answer» D. Vacancies | |
| 12. |
Which material is sensitive to temperature drop? |
| A. | Cu |
| B. | Al |
| C. | Ni |
| D. | Ferritic steel |
| Answer» E. | |
| 13. |
What is the comparison for static and dynamic toughness? |
| A. | Static toughness higher |
| B. | Both equal |
| C. | Dynamic toughness higher |
| D. | Can’t say |
| Answer» D. Can‚Äö√Ñ√∂‚àö√ë‚àö¬•t say | |
| 14. |
What term is used for the energy absorbed by the material without undergoing failure under dynamic loading? |
| A. | Impact toughness |
| B. | Static toughness |
| C. | Compressive strength |
| D. | Bend strength |
| Answer» B. Static toughness | |
| 15. |
What causes a brittle fracture? |
| A. | Notch |
| B. | Vacancy |
| C. | Dislocation |
| D. | Holes |
| Answer» B. Vacancy | |
| 16. |
With increase in __________ plastic deformation amount also increases. |
| A. | Triaxiality |
| B. | Notching |
| C. | Temperature |
| D. | Rate of loading |
| Answer» D. Rate of loading | |
| 17. |
With increasing ___________ material’s amount of deformation which can be achieved decreases.$ |
| A. | Temperature |
| B. | Slip systems |
| C. | Strain rate |
| D. | Vacancies |
| Answer» D. Vacancies | |
| 18. |
On increasing temperature, a material tends to lose the capacity of deformation due to increased ___________ |
| A. | Tensile stress |
| B. | Yield stress |
| C. | Compressive stress |
| D. | Shear stress |
| Answer» C. Compressive stress | |