MCQOPTIONS
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MCQOPTIONS
This section includes 18 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. |
Lower stress is required to initiate yielding. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Cottrell atmosphere is a conceptual term of yield point phenomenon. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
What is the main reason for discontinuous yielding? |
| A. | Grain boundaries |
| B. | Substitutional atoms |
| C. | Interstitial atoms |
| D. | Vacancies |
| Answer» D. Vacancies | |
| 4. |
What percent of cold reduction is given in skin rolling? |
| A. | < 0.5% |
| B. | 0.5-2% |
| C. | 2-5% |
| D. | 5-10% |
| Answer» C. 2-5% | |
| 5. |
Which of the following term will be seen in the plastic zone? |
| A. | Yield point |
| B. | Fracture point |
| C. | Proportional limit |
| D. | Elastic limit |
| Answer» C. Proportional limit | |
| 6. |
Yield point is the point of _________ at which transition from elastic to plastic happens. |
| A. | Stress |
| B. | Strain |
| C. | Toughness |
| D. | Resilience |
| Answer» B. Strain | |
| 7. |
WHAT_PERCENT_OF_COLD_REDUCTION_IS_GIVEN_IN_SKIN_ROLLING??$ |
| A. | < 0.5% |
| B. | 0.5-2% |
| C. | 2-5% |
| D. | 5-10% |
| Answer» C. 2-5% | |
| 8. |
Cottrell atmosphere is a yield point phenomenon related term.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
What_is_the_main_reason_for_discontinuous_yielding?$ |
| A. | Grain boundaries |
| B. | Substitutional atoms |
| C. | Interstitial atoms |
| D. | Vacancies |
| Answer» D. Vacancies | |
| 10. |
Lower_stress_is_required_to_initiate_yielding. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
What process is used to overcome stretcher strains? |
| A. | Deep drawing |
| B. | Skin rolling |
| C. | Bending |
| D. | Finishing |
| Answer» C. Bending | |
| 12. |
Stretcher strains are because of ____ |
| A. | Necking |
| B. | Strain hardening |
| C. | Lüders bands |
| D. | Cold rolling |
| Answer» D. Cold rolling | |
| 13. |
Which term is different from others? |
| A. | Yield point |
| B. | Fracture point |
| C. | Proportional limit |
| D. | Elastic limit |
| Answer» C. Proportional limit | |
| 14. |
What term is used for the load at which a sudden drop occurs in a conventional tensile curve? |
| A. | Plastic instability |
| B. | Upper yield point |
| C. | Lower yield point |
| D. | Static load |
| Answer» C. Lower yield point | |
| 15. |
Yield point elongation is ____ times the elastic elongation. |
| A. | 2 |
| B. | 20 |
| C. | 200 |
| D. | 2000 |
| Answer» C. 200 | |
| 16. |
Which material shows yield point phenomena? |
| A. | Aluminium |
| B. | Copper |
| C. | Low carbon steel |
| D. | Glass |
| Answer» D. Glass | |
| 17. |
The yield point is ____ |
| A. | Stress |
| B. | Strain |
| C. | Toughness |
| D. | Resilience |
| Answer» B. Strain | |
| 18. |
The elongation that occurs at constant load is called ____ |
| A. | Homogeneous elongation |
| B. | Elastic elongation |
| C. | Yield point elongation |
| D. | Constant elongation |
| Answer» D. Constant elongation | |