MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
Which of the following material is best to manufacture the core-shell chamber for the nuclear reactor? |
| A. | Ferritic stainless steel |
| B. | Austenitic stainless steel |
| C. | Tempered martensitic steel |
| D. | High chromium steel |
| Answer» D. High chromium steel | |
| 2. |
The degree of neutron embrittlement ____________ with increases in temperature. |
| A. | increases |
| B. | decreases |
| C. | remains the same |
| D. | no relationship |
| Answer» C. remains the same | |
| 3. |
Which of the following is embrittlement material for liquid metal embrittlement? |
| A. | Gallium |
| B. | Sodium |
| C. | Tin |
| D. | Copper |
| Answer» E. | |
| 4. |
The liquid metal embrittlement is a combined effect of solid metal surface attacked by _________ |
| A. | organic liquid |
| B. | inorganic liquid |
| C. | liquid metal |
| D. | low melting point metal |
| Answer» E. | |
| 5. |
Which of the following fracture is assisted by chemical attack? |
| A. | Fatigue |
| B. | Creep |
| C. | Stress-corrosion cracking |
| D. | Neutron embrittlement |
| Answer» D. Neutron embrittlement | |
| 6. |
The fracture form from hydrogen embrittlement cannot be ___________ type. |
| A. | cleavage |
| B. | intergranular |
| C. | ductile |
| D. | creep |
| Answer» E. | |
| 7. |
In the hydrogen embrittlement of the metals, the hydrogen is present in form of ________ |
| A. | H<sub>2</sub> |
| B. | H |
| C. | H<sub>3</sub> |
| D. | H<sub>2</sub>O |
| Answer» C. H<sub>3</sub> | |
| 8. |
The hydrogen embrittlement is most severe ___________ |
| A. | near zero kelvin temperature |
| B. | at room temperature |
| C. | well above room temperature |
| D. | near the melting point of material |
| Answer» C. well above room temperature | |
| 9. |
The body-centered cubic and hexagonal closed packed structure are more prone to hydrogen embrittlement than FCC. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which of the following element does not increase the susceptibility of steel towards temper embrittlement? |
| A. | Manganese |
| B. | Chromium |
| C. | Nickel |
| D. | Carbon |
| Answer» E. | |
| 11. |
Which of the following is not an embrittlement element in steel? |
| A. | Carbon |
| B. | Antimony |
| C. | Phosphorus |
| D. | Tin |
| Answer» B. Antimony | |
| 12. |
The fracture in tempered embrittlement steel is generally transgranular and propagates along the prior austenite grain boundary. |
| A. | True |
| B. | False |
| Answer» C. | |