MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The stress level at which plastic deformation begins is known as the proportional limit point. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Yield strength is the stress corresponding to point of intersection of stress-strain curve and strain offset line. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Cold working increases ______ of the metal. |
| A. | hardness |
| B. | ductility |
| C. | melting point |
| D. | conductivity |
| Answer» B. ductility | |
| 4. |
Which of the following metals has recrystallization temperature above 1000 C? |
| A. | Cu- Zn alloy |
| B. | Ni |
| C. | Fe |
| D. | W |
| Answer» E. | |
| 5. |
Which of the following metals has recrystallization temperature below 0 C? |
| A. | Pb |
| B. | Zn |
| C. | Al |
| D. | Cu |
| Answer» B. Zn | |
| 6. |
In hot working, plastic deformation operations are often carried out at temperatures above the ______ temperature. |
| A. | melting |
| B. | recrystallization |
| C. | room |
| D. | cold working |
| Answer» C. room | |
| 7. |
For pure metals, the recrystallization temperature is normally _____ |
| A. | equal to T<sub>m</sub> |
| B. | 0.5 T<sub>m</sub> |
| C. | 0.8 T<sub>m</sub> |
| D. | 0.3 T<sub>m</sub> |
| Answer» E. | |
| 8. |
The recrystallization in pure metal is faster than in _____ |
| A. | non-metals |
| B. | alloys |
| C. | polymers |
| D. | d-block metals |
| Answer» C. polymers | |
| 9. |
The critical degree of cold work lies between _____ of cold work. |
| A. | 2% and 20% |
| B. | 5% and 10% |
| C. | 7% and 15% |
| D. | 20% and 30% |
| Answer» B. 5% and 10% | |
| 10. |
The rate of recrystallization can be enhanced by ______ |
| A. | increasing the temperature |
| B. | increasing the percentage of cold work |
| C. | increasing the rate of cooling |
| D. | applying pressure |
| Answer» C. increasing the rate of cooling | |