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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 | |