MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The slip bands inside a grain during creep was first observed by which instrument? |
| A. | Scanning electron microscope |
| B. | Transmission electron microscope |
| C. | Phase-contrast microscopy |
| D. | X-ray diffraction |
| Answer» D. X-ray diffraction | |
| 2. |
The formation of sub-grain structure inside the lattice is a phenomena observed in the high-temperature creep. The number of new sub-grain formed are highest in which stage of creep? |
| A. | Primary |
| B. | Secondary |
| C. | Tertiary |
| D. | Equal in all phase |
| Answer» B. Secondary | |
| 3. |
The slip band produced at higher temperature are _______ and ________ spaced than for a room temperature deformation. |
| A. | fine, widely |
| B. | fine, narrow |
| C. | coarse, widely |
| D. | coarse, narrow |
| Answer» D. coarse, narrow | |
| 4. |
In aluminium the creep occurs by slip on the _______ planes. |
| A. | {110} |
| B. | {100}, {111} |
| C. | {200} |
| D. | {311} |
| Answer» C. {200} | |
| 5. |
The large-grained aluminum is most suitable for creep related study. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The change in the slope of stress-rupture line is not due to _____________ |
| A. | metallurgical change |
| B. | necking of the material |
| C. | oxidation |
| D. | recrystallization |
| Answer» C. oxidation | |
| 7. |
The creep test and the stress-rupture test are the same things representing the same type of curve at equal stresses. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Typically the creep rate is measured in which unit? |
| A. | Length/minutes |
| B. | Load/length |
| C. | Percentage change of length/hour |
| D. | Percentage change of length/percentage change of time |
| Answer» D. Percentage change of length/percentage change of time | |