MCQOPTIONS
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MCQOPTIONS
This section includes 4 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. |
Why can t cold working be used for strengthening in case of plastic deformation? |
| A. | Recrystallization |
| B. | Thermal instability |
| C. | Lowers tensile strength |
| D. | Introduces coarsening |
| Answer» B. Thermal instability | |
| 2. |
Strengthening of an iron base, nickel bade, and cobalt base alloys is done by __________ |
| A. | Precipitation hardening |
| B. | Grain boundary hardening |
| C. | Dispersion hardening |
| D. | Transformation hardening |
| Answer» D. Transformation hardening | |
| 3. |
Iron base alloys have melting point around __________ |
| A. | 900<sup>o</sup>C |
| B. | 1500<sup>o</sup>C |
| C. | 1900<sup>o</sup>C |
| D. | 2400<sup>o</sup>C |
| Answer» C. 1900<sup>o</sup>C | |
| 4. |
The time required for the occurrence of creep is known as _________ |
| A. | Creep resistance |
| B. | Creep life |
| C. | Creep limit |
| D. | Creep recurrence |
| Answer» C. Creep limit | |