MCQOPTIONS
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MCQOPTIONS
This section includes 7 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 fatigue strength of the metal strain aging due to interstitial atoms is shown by which of the following curve? |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 2. |
The fatigue strength of the pure metal is shown by which of the following curve? |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 3. |
The ratio of fatigue strength of the material in the transverse direction to longitudinal direction (of their extrusion) will be highest in ___________ |
| A. | induction furnace melted sample |
| B. | arc melting furnace melted sample |
| C. | vacuum melting sample |
| D. | cupola furnace meted sample |
| Answer» D. cupola furnace meted sample | |
| 4. |
Which of the following structure has the best fatigue property? |
| A. | Pearlite |
| B. | Martensite |
| C. | Tempered martensite |
| D. | Bainite |
| Answer» E. | |
| 5. |
What is the relationship between the grain size and the fatigue strength for low stacking fault energy material? |
| A. | Fatigue strength is directly proportional to grain size |
| B. | Fatigue strength is inversely proportional to grain size |
| C. | Fatigue strength is directly proportional to the square of grain size |
| D. | Fatigue strength is inversely proportional to the square root of grain size |
| Answer» E. | |
| 6. |
The effect of grain size on the fatigue strength is predominant in material with high stacking fault energy while the effect of grain size is negligible in low stacking fault energy material. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
The material with higher stacking fault energy has higher fatigue strength whereas the material with lower stacking fault will have a lower fatigue limit. |
| A. | True |
| B. | False |
| Answer» C. | |