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. |
Deformation by twinning is not a dominant mode of deformation in FCC metals. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Annealing twins largely effect strain hardening properties. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The stress-strain curve of single crystal undergoing twinning shows ____ |
| A. | No irregularity |
| B. | Jagged irregularities |
| C. | Sudden drop in the curve |
| D. | Peaks |
| Answer» C. Sudden drop in the curve | |
| 4. |
What is twinning plane for BCC metals? |
| A. | {1 1 1} |
| B. | {1 0 0} |
| C. | {1 2 3} |
| D. | {1 1 2} |
| Answer» E. | |
| 5. |
THE_STRESS-STRAIN_CURVE_OF_SINGLE_CRYSTAL_UNDERGOING_TWINNING_SHOWS_____?$ |
| A. | No irregularity |
| B. | Jagged irregularities |
| C. | Sudden drop in the curve |
| D. | Peaks |
| Answer» C. Sudden drop in the curve | |
| 6. |
Annealing twins largely effect strain hardening properties.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which_of_the_following_statement_is_false?$ |
| A. | Annealing twins occur during annealing heat treatment |
| B. | Mechanical twins generate due to plastic deformation |
| C. | Annealing twins form in high stacking fault energy metals |
| D. | Annealing twins are mostly observed in FCC metals |
| Answer» D. Annealing twins are mostly observed in FCC metals | |
| 8. |
Deformation_by_twinning_is_not_a_dominant_mode_of_deformation_in_FCC_metals. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
What is associated with a cry of tin? |
| A. | Slip |
| B. | Thermal vibration |
| C. | Twinning |
| D. | Quenching |
| Answer» D. Quenching | |
| 10. |
What is twinning plane for rhombohedral crystals? |
| A. | {1 1 1} |
| B. | {1 1 0} |
| C. | {1 1 2} |
| D. | {0 1 1} |
| Answer» E. | |
| 11. |
What is twinning plane for HCP crystals? |
| A. | {0 0 0 1} |
| B. | {1 0 <span style="text-decoration:overline;">1</span> 0} |
| C. | {1 0 <span style="text-decoration:overline;">1</span> 2} |
| D. | {1 1 1 1} |
| Answer» D. {1 1 1 1} | |
| 12. |
What is twinning plane in FCC metals? |
| A. | {1 1 1} |
| B. | {1 0 0} |
| C. | {1 1 0} |
| D. | {2 1 1} |
| Answer» B. {1 0 0} | |
| 13. |
The plane passing through the twinning axis and separating the region of twinning from undeformed part is called ___ planes. |
| A. | Twinning |
| B. | Slip |
| C. | Basal |
| D. | Close packed |
| Answer» B. Slip | |
| 14. |
In ___ crystals, slip systems are limited to three, making slip difficult. |
| A. | BCC |
| B. | FCC |
| C. | HCP |
| D. | SC |
| Answer» D. SC | |
| 15. |
The extend of deformation due to mechanical twinning is ___ than due to slip. |
| A. | smaller |
| B. | larger |
| C. | equal |
| D. | smallest |
| Answer» B. larger | |