MCQOPTIONS
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MCQOPTIONS
This section includes 17 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. |
Strain hardening is caused by glissile dislocations. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Polycrystalline metal work harden more rapid than a single crystal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
2 No. or half hard represents __________ of cold reduction. |
| A. | 11% |
| B. | 20% |
| C. | 40% |
| D. | 60% |
| Answer» C. 40% | |
| 4. |
Which material can be deep drawn? |
| A. | Rapid work hardening |
| B. | Slow work hardening |
| C. | Low workable |
| D. | Slow work hardening alloys with low workability |
| Answer» B. Slow work hardening | |
| 5. |
Strain hardening ____________ |
| A. | Increases density |
| B. | Decreases coefficient of thermal expansion |
| C. | Increases internal energy |
| D. | Increases corrosion resistance |
| Answer» D. Increases corrosion resistance | |
| 6. |
WHICH_MATERIAL_CAN_BE_DEEP_DRAWN??$ |
| A. | Rapid work hardening |
| B. | Slow work hardening |
| C. | Low workable |
| D. | Slow work hardening alloys with low workability |
| Answer» B. Slow work hardening | |
| 7. |
Polycrystalline metal work harden more rapid than a single crystal.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
2_No._or_half_hard_represents____________of_cold_reduction.$ |
| A. | 11% |
| B. | 20% |
| C. | 40% |
| D. | 60% |
| Answer» C. 40% | |
| 9. |
Strain_hardening_is_caused_by_glissile_dislocations. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Strain hardening ___________? |
| A. | Increases density |
| B. | Decreases coefficient of thermal expansion |
| C. | Increases internal energy |
| D. | Increases corrosion resistance |
| Answer» D. Increases corrosion resistance | |
| 11. |
Coercive force of permanent magnets __________ with increase in cold working. |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First increases and then decreases |
| Answer» B. Decreases | |
| 12. |
Electrical resistivity of an alloy ____________ with increasing degree of cold working. |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First increases then decrease |
| Answer» B. Decreases | |
| 13. |
Which property decreases on strain hardening? |
| A. | Elastic modulus |
| B. | Percent elongation |
| C. | Yield strength |
| D. | Hardness |
| Answer» C. Yield strength | |
| 14. |
In highly ductile materials, toughness ___________ with the strain hardening. |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First increases and then decreases |
| Answer» E. | |
| 15. |
Toughness of metal with strain hardening ___________ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First increases and then decreases |
| Answer» C. Remains constant | |
| 16. |
Which term is different from other options? |
| A. | Strain hardening |
| B. | Dislocation hardening |
| C. | Cold working |
| D. | Work hardening |
| Answer» C. Cold working | |
| 17. |
Which property deteriorates on strain hardening? |
| A. | Hardness |
| B. | UTS |
| C. | Ductility |
| D. | Yield strength |
| Answer» D. Yield strength | |