MCQOPTIONS
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MCQOPTIONS
This section includes 13 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 transformer sheet is an example of texture in material. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The texture in a material cannot be found by __________ |
| A. | Optical microscope |
| B. | XRD |
| C. | SEM |
| D. | FTIR |
| Answer» E. | |
| 3. |
Abnormal grain growth is defined as ________________ |
| A. | growth of grain much larger than other nearby grain |
| B. | growth of all grain to a much larger extent |
| C. | growth in an irregular shape |
| D. | growth in a regular shape |
| Answer» B. growth of all grain to a much larger extent | |
| 4. |
The recrystallization temperature _______________ with increasing purity of the material. |
| A. | increases |
| B. | decreases |
| C. | remains unaffected |
| D. | no relationship |
| Answer» C. remains unaffected | |
| 5. |
If an annealing process is carried completing in 50 min at temperature T and the annealing time is reduced to 25 min, the temperature should be increased by ________ |
| A. | 2T |
| B. | 3T |
| C. | T+10 Degree |
| D. | T+100 Degrees |
| Answer» D. T+100 Degrees | |
| 6. |
The Smaller the degree of deformation, the ____________ the required temperature to cause recrystallization. |
| A. | higher |
| B. | lower |
| C. | unaffected |
| D. | cannot comment |
| Answer» B. lower | |
| 7. |
The recrystallization temperature is defined as the temperature at which highly cold-worked alloy can be recrystallized in 1 hr. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
The driving force for grain growth is _________ |
| A. | the stored energy of cold working |
| B. | the decrease in the grain area energy |
| C. | the decrease in the point defect energy |
| D. | the thermal energy of heating |
| Answer» C. the decrease in the point defect energy | |
| 9. |
The driving force for recrystallization is _________ |
| A. | the stored energy of cold working |
| B. | the decrease in the grain area energy |
| C. | the decrease in the point defect energy |
| D. | the thermal energy of heating |
| Answer» B. the decrease in the grain area energy | |
| 10. |
Property which is most affected by recovery process is ___________ |
| A. | structure sensitive property |
| B. | point defect sensitive property |
| C. | dislocation sensitive |
| D. | surface sensitive |
| Answer» C. dislocation sensitive | |
| 11. |
If the cold-worked material of 1 cm3 is enlarged in size of an auditorium(50*50*50m), the typical width of dislocation corresponding to this auditorium would be equivalent to _________ |
| A. | the size of rope with thickness 1cm |
| B. | a rope width equal to 1m |
| C. | spider web thickness equal to 0.1mm |
| D. | invisible bacteria with width 1 nm |
| Answer» D. invisible bacteria with width 1 nm | |
| 12. |
The electrical resistivity and chemical reactivity of the material increase with cold working. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Increasing temperature will lower the rate of strain hardening. |
| A. | True |
| B. | False |
| Answer» B. False | |