MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Behaviour knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
True stress value is affected by strain hardening. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Materials in general have higher elastic strain of 50% order. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The points on the true stress strain curve ______ the conventional stress strain curves up to the onset of necking. |
| A. | Lie on the left of |
| B. | Lie on the right of |
| C. | Superimpose |
| D. | May lie on left or right |
| Answer» B. Lie on the right of | |
| 4. |
True stress strain curve _______ |
| A. | Continuously rises |
| B. | After yield point comes down |
| C. | After yield point remains constant |
| D. | Uncertain after yield point |
| Answer» B. After yield point comes down | |
| 5. |
What is considered more in mechanical working processes? |
| A. | Yield stress |
| B. | Shear stress |
| C. | True stress |
| D. | Engineering stress |
| Answer» D. Engineering stress | |
| 6. |
True value of stress experience by material _____ than the conventional one for a given load. |
| A. | Higher |
| B. | Lower |
| C. | Equal |
| D. | Higher or lower |
| Answer» B. Lower | |
| 7. |
Plastic instability occurs when the slope of the true stress strain curve ____ the true stress at the point. |
| A. | Exceeds |
| B. | Equals |
| C. | Is less |
| D. | Is less or higher |
| Answer» C. Is less | |
| 8. |
What term defines plastic instability? |
| A. | dP = constant |
| B. | dP = 0 |
| C. | dP < 0 |
| D. | dP > 0 |
| Answer» C. dP < 0 | |
| 9. |
What is the relation between true and engineering stress? |
| A. | <sub>T</sub> = ln (L/L<sub>0</sub>) |
| B. | <sub>T</sub> = ln (1 + ) |
| C. | <sub>T</sub> = (1 + ) |
| D. | <sub>T</sub> = (1 ) |
| Answer» D. <sub>T</sub> = (1 ) | |
| 10. |
What is a relation between true and engineering strain? |
| A. | <sub>T</sub> = ln (1 + ) |
| B. | <sub>T</sub> = ln (L/L<sub>0</sub>) |
| C. | <sub>T</sub> = ln ( L/L<sub>0</sub>) |
| D. | <sub>T</sub> = L/L<sub>0</sub> |
| Answer» B. <sub>T</sub> = ln (L/L<sub>0</sub>) | |
| 11. |
True strain is ____ than the engineering strain corresponding to a given load. |
| A. | Larger |
| B. | Smaller |
| C. | Equal |
| D. | Either smaller or equal |
| Answer» C. Equal | |
| 12. |
What is an expression of true stress? |
| A. | P<sub>u</sub> / A<sub>i</sub> |
| B. | P<sub>u</sub> / A<sub>0</sub> |
| C. | P / A<sub>i</sub> |
| D. | P / A<sub>0</sub> |
| Answer» D. P / A<sub>0</sub> | |