MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials and Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
With the addition of which element, does zinc create resistance to creep? |
| A. | Pb |
| B. | Cd |
| C. | Mg |
| D. | Cu |
| Answer» D. Cu | |
| 2. |
How much copper is present in Y-alloys? |
| A. | 4% |
| B. | 2% |
| C. | 1.5% |
| D. | 1% |
| Answer» B. 2% | |
| 3. |
Which of these is not a stage in precipitation hardening treatment? |
| A. | Solution treatment |
| B. | Tempering |
| C. | Quenching |
| D. | Ageing |
| Answer» C. Quenching | |
| 4. |
What happens when the maximum strength is achieved by the aging process? |
| A. | Precipitate hardening |
| B. | Age hardening |
| C. | Over-aging |
| D. | Natural ageing |
| Answer» D. Natural ageing | |
| 5. |
Artificial aging process takes place at a temperature range of ________ |
| A. | 190-260<sup>o</sup>C |
| B. | 260-300<sup>o</sup>C |
| C. | 300-350<sup>o</sup>C |
| D. | Room temperature |
| Answer» B. 260-300<sup>o</sup>C | |