MCQOPTIONS
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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. |
Layered materials such as graphite and talk _____ deform by ______ |
| A. | Elastically, dislocation glide |
| B. | Elastically, twinning |
| C. | Plastically, dislocation glide |
| D. | Plastically, twinning |
| Answer» D. Plastically, twinning | |
| 2. |
What are slip planes in NaCl crystals? |
| A. | {1 1 1} |
| B. | {1 1 0} |
| C. | {2 1 0} |
| D. | {0 0 0 1} |
| Answer» C. {2 1 0} | |
| 3. |
What is slip direction in CsCl? |
| A. | <1 1 1> |
| B. | <1 1 0> |
| C. | <1 0 1> |
| D. | <0 0 1> |
| Answer» E. | |
| 4. |
Simple ionic crystals show no plastic deformation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Covalent crystals don’t show ____ |
| A. | Plastic deformation |
| B. | Narrow dislocations |
| C. | High P-N stress |
| D. | Brittleness |
| Answer» B. Narrow dislocations | |
| 6. |
Polymers don’t have dislocations. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
WHAT_IS_SLIP_DIRECTION_IN_CSCL??$ |
| A. | <1 1 1> |
| B. | <1 1 0> |
| C. | <1 0 1> |
| D. | <0 0 1> |
| Answer» E. | |
| 8. |
Layered materials such as graphite and talk _____ deform by ______$ |
| A. | Elastically, dislocation glide |
| B. | Elastically, twinning |
| C. | Plastically, dislocation glide |
| D. | Plastically, twinning |
| Answer» D. Plastically, twinning | |
| 9. |
What_are_slip_planes_in_NaCl_crystals?$ |
| A. | {1 1 1} |
| B. | {1 1 0} |
| C. | {2 1 0} |
| D. | {0 0 0 1} |
| Answer» C. {2 1 0} | |
| 10. |
What is the most commonly observed slip system in covalent crystals? |
| A. | {1 2 3} <1 1 1> |
| B. | {1 1 1} <1 0 0> |
| C. | {1 1 2} <1 1 1> |
| D. | {1 1 1} <1 1 0> |
| Answer» C. {1 1 2} <1 1 1> | |
| 11. |
Simple ionic crystals show no plastic deformation? |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Ionic crystals consist _____ bonds. |
| A. | Weak |
| B. | Strong |
| C. | Directional |
| D. | Non-directional |
| Answer» E. | |
| 13. |
Covalent crystals don’t show ____$ |
| A. | Plastic deformation |
| B. | Narrow dislocations |
| C. | High P-N stress |
| D. | Brittleness |
| Answer» B. Narrow dislocations | |
| 14. |
Covalent crystals contain ____ dislocations and show _____ nature. |
| A. | Narrow, ductile |
| B. | Narrow, brittle |
| C. | Wide, ductile |
| D. | Wide, brittle |
| Answer» C. Wide, ductile | |
| 15. |
Which planes are most densely packed in NiO crystal? |
| A. | {1 0 0} |
| B. | {1 1 0} |
| C. | {1 1 1} |
| D. | {0 0 0 1} |
| Answer» B. {1 1 0} | |
| 16. |
The Burgers vector in ionic crystal dislocations is _____ as compared to that of metallic solids. |
| A. | Smaller |
| B. | Larger |
| C. | Equal |
| D. | Not specific |
| Answer» C. Equal | |
| 17. |
Which bonding is found in ceramic compounds? |
| A. | Ionic |
| B. | covalent |
| C. | metallic |
| D. | ionic and/or covalent |
| Answer» E. | |
| 18. |
Polymers don’t have dislocations. |
| A. | True |
| B. | False |
| Answer» C. | |