MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
Smaller relative atomic displacements are required for a motion of a narrow dislocation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
A width of dislocation is dependent on temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Ionic solids have _____ dislocation width and _____ frictional stress. |
| A. | Wide, very small |
| B. | Wide, moderate |
| C. | Narrow, moderate |
| D. | Narrow, large |
| Answer» D. Narrow, large | |
| 4. |
BCC metals (transition metals) have _____ yield strength temperature sensitivity. |
| A. | No |
| B. | Small |
| C. | Large |
| D. | Moderate |
| Answer» D. Moderate | |
| 5. |
Covalent solids have ____ width dislocations. |
| A. | Wide |
| B. | Narrow |
| C. | Moderate |
| D. | Very narrow |
| Answer» E. | |
| 6. |
What is P-N stress for a dislocation of width 10b? |
| A. | 0 |
| B. | G |
| C. | G/400 |
| D. | G/10<sup>27</sup> |
| Answer» E. | |
| 7. |
Which factor doesn t affect P-N stress? |
| A. | Periodicity of atoms |
| B. | Dislocation width |
| C. | Crystal structure |
| D. | Applied stress |
| Answer» E. | |