MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Materials Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In strain hardening, there is an increase in density. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
In strain hardening, the body is plastically deformed. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following interactions will not continue to act at about 0.6Tm? (where Tm is melting point) |
| A. | Elastic interaction |
| B. | Modulus interaction |
| C. | Electrical interaction |
| D. | Long range interaction |
| Answer» D. Long range interaction | |
| 4. |
Which of the following isn’t a strengthening mechanism for multi-phase materials? |
| A. | Precipitation strengthening |
| B. | Dispersion strengthening |
| C. | Solid solution strengthening |
| D. | Martensite strengthening |
| Answer» D. Martensite strengthening | |
| 5. |
Which of the following isn’t a strengthening mechanism? |
| A. | Grain size reduction |
| B. | Solid solution strengthening |
| C. | Strain hardening |
| D. | Grain size increment |
| Answer» E. | |
| 6. |
IN_STRAIN_HARDENING,_THE_BODY_IS_PLASTICALLY_DEFORMED.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
In_strain_hardening,_there_is_an_increase_in_density.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
At what angle are Hartmann lines inclined to the tensile axis? |
| A. | 45 degrees |
| B. | 15 degrees |
| C. | 30 degrees |
| D. | 20 degrees |
| Answer» B. 15 degrees | |
| 9. |
Which is not a correct term for bands in yield point phenomenon? |
| A. | Lüders bands |
| B. | Hartmann lines |
| C. | stretcher stains |
| D. | Lüders lines |
| Answer» E. | |
| 10. |
Which of the following interactions will continue to act to about 0.6Tm?(Where Tm is melting point) |
| A. | Elastic interaction |
| B. | Modulus interaction |
| C. | Electrical interaction |
| D. | Long range interaction |
| Answer» D. Long range interaction | |
| 11. |
Which of the following is not a way of interaction between solute atoms and dislocation? |
| A. | Elastic interaction |
| B. | Plastic interaction |
| C. | Modulus interaction |
| D. | stacking fault interaction |
| Answer» C. Modulus interaction | |
| 12. |
Which of the following is not improved by grain size reduction? |
| A. | Hardness |
| B. | Toughness |
| C. | Elasticity |
| D. | strength |
| Answer» D. strength | |
| 13. |
The yield strength of a material going through grain size reduction increases by a factor, k multiplied by:(where d is the diameter of grain) |
| A. | d<sup>2</sup> |
| B. | d<sup>1/2</sup> |
| C. | d<sup>-1/2</sup> |
| D. | d<sup>-2</sup> |
| Answer» D. d<sup>-2</sup> | |
| 14. |
Which of the following isn’t a strengthening mechanism for multi-phase materials?$ |
| A. | Precipitation strengthening |
| B. | Dispersion strengthening |
| C. | Solid solution strengthening |
| D. | Martensite strengthening |
| Answer» D. Martensite strengthening | |
| 15. |
Which of the following isn’t a strengthening mechanism? |
| A. | Grain size reduction |
| B. | Solid solution strengthening |
| C. | Strain hardening |
| D. | Grain size increment |
| Answer» E. | |