MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
The hardening magnitude, in precipitation hardenable alloys, doesn t depend on alloy composition. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
In Al-Cu alloys, phase is ____ coherent with matrix. |
| A. | Fully |
| B. | Semi |
| C. | Non |
| D. | In |
| Answer» B. Semi | |
| 3. |
Coherency between the precipitating phase and the matrix phase is required for precipitation hardening. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
In the second step of precipitation hardening, alloy is heated to ____ temperature. |
| A. | Melting |
| B. | Homogenizing |
| C. | Solutionizing |
| D. | Ageing |
| Answer» E. | |
| 5. |
In the first step of precipitation hardening, alloy is heated to ____ temperature. |
| A. | Recrystallization |
| B. | Melting |
| C. | Ageing |
| D. | Homogenizing |
| Answer» E. | |
| 6. |
For precipitation hardening, the alloy should exhibit decreasing solid solubility with ______ |
| A. | Increasing temperature |
| B. | Decreasing temperature |
| C. | Increasing pressure |
| D. | Decreasing pressure |
| Answer» C. Increasing pressure | |
| 7. |
With an increase in the size of precipitate particle, magnitude of strengthening ______ |
| A. | Decreases |
| B. | Increases |
| C. | Remains constant |
| D. | First increases then decrease |
| Answer» E. | |
| 8. |
What is the ageing temperature of Al-4%Cu alloy? |
| A. | 160 C |
| B. | 130 C |
| C. | 218 C |
| D. | 850 C |
| Answer» C. 218 C | |