MCQOPTIONS
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MCQOPTIONS
This section includes 10 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 compressive residual stress ____________ the fatigue limit. |
| A. | increases |
| B. | decreases |
| C. | does not change |
| D. | no relation |
| Answer» B. decreases | |
| 2. |
The following diagram is the correct representation of the Goodman diagram. The point Y in the given curve indicates the ______________ |
| A. | yield point |
| B. | ultimate tensile strength point |
| C. | failure point |
| D. | minimum stress point |
| Answer» B. ultimate tensile strength point | |
| 3. |
The following picture is the correct representation of the Goodman diagram. The point X in the given curve indicates the ______________ |
| A. | yield point |
| B. | ultimate tensile strength point |
| C. | failure point |
| D. | minimum stress point |
| Answer» C. failure point | |
| 4. |
The following diagram is the correct representation of the Goodman diagram. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
As the mean stress increases, the allowable alternating stress on the component also increases. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
In the below S-N diagram, the M1, M2, M3, M4 indicates the mean stress for the given curve. The correct order of the values of mean stress will be ___________ |
| A. | M1>M2>M3>M4 |
| B. | M4>M3>M2>M1 |
| C. | M3>M4>M1>M2 |
| D. | M2>M3>M1>M4 |
| Answer» C. M3>M4>M1>M2 | |
| 7. |
In the below S-N diagram, the R1, R2, R3, R4 indicates the stress ratio for the given curve. The correct order of the values of stress ratio will be ___________ |
| A. | R1>R2>R3>R4 |
| B. | R4>R3>R2>R1 |
| C. | R3>R4>R1>R2 |
| D. | R2>R3>R1>R4 |
| Answer» B. R4>R3>R2>R1 | |
| 8. |
When the R (stress ratio) becomes more positive, the fatigue limit _____________ |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | no relationship |
| Answer» B. decreases | |
| 9. |
When the value of R becomes positive, that indicates the mean stress is becoming _________ |
| A. | more negative |
| B. | more positive |
| C. | remain constant |
| D. | no relationship |
| Answer» C. remain constant | |
| 10. |
If the mean stress is zero for any component, then the value of the stress ratio (R) will be equal to _______ |
| A. | 1 |
| B. | 0.5 |
| C. | -1 |
| D. | -0.5 |
| Answer» D. -0.5 | |