MCQOPTIONS
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MCQOPTIONS
This section includes 9 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 does not play a role in fatigue failure? |
| A. | Corrosion |
| B. | Stress concentration |
| C. | Temperature |
| D. | Sample size |
| Answer» E. | |
| 2. |
Which of the following is not among the essential requirement to cause fatigue failure? |
| A. | The maximum tensile stress of sufficiently high value |
| B. | Large enough variation or fluctuation in the applied pressure |
| C. | The sufficiently large number of cycle of applied stress |
| D. | High shear stress on the sample |
| Answer» E. | |
| 3. |
The fatigue failure generally starts at the _______________ |
| A. | notch or inclusion |
| B. | center of the surface |
| C. | endpoints of the sample |
| D. | geometrical center of the sample |
| Answer» B. center of the surface | |
| 4. |
Which of the following is not a characteristic of fatigue failure? |
| A. | Benchmarks |
| B. | River pattern |
| C. | Flow marks |
| D. | Cup and cone |
| Answer» E. | |
| 5. |
The fatigue failure fracture surface consists of both a smooth region and a rough region. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The fatigue failure occurs without any gross warning. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Of the total failure of all the industrial components, the fatigue fracture accounts for how much percentage of fault? |
| A. | 10% |
| B. | 20 % |
| C. | 90% |
| D. | 50% |
| Answer» D. 50% | |
| 8. |
Which of the following is a sudden failure? |
| A. | Brittle fracture |
| B. | Ductile fracture |
| C. | Fatigue |
| D. | Creep |
| Answer» B. Ductile fracture | |
| 9. |
When equipment fails much before the required stress to the fracture, it is called ______ |
| A. | failure |
| B. | fatigue |
| C. | creep |
| D. | rupture |
| Answer» C. creep | |