MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the pouring basin has a much larger cross-sectional area than the sprue bottom, then the velocity of the molten metal is? |
| A. | low |
| B. | high |
| C. | normal |
| D. | either high or low |
| Answer» B. high | |
| 2. |
In a free-falling liquid, the cross-sectional area of the stream? |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | first increases and then decreases |
| Answer» C. remains constant | |
| 3. |
Risers are also called __________ |
| A. | spure |
| B. | runners |
| C. | feeders |
| D. | risers |
| Answer» D. risers | |
| 4. |
If there are 930 grains per mm2 on a photomicrograph of a metal at 2X, what is the ASTM grain size number of the metal? |
| A. | 6 |
| B. | 7 |
| C. | 7.92 |
| D. | 8.91 |
| Answer» E. | |
| 5. |
A mixture of a metal(s) and a non-metal(s) is called? |
| A. | composite |
| B. | alloy |
| C. | dislocation |
| D. | cermet |
| Answer» C. dislocation | |
| 6. |
What are the examples of line defect? |
| A. | vacancies |
| B. | dislocations |
| C. | twins |
| D. | stacking faults |
| Answer» C. twins | |
| 7. |
Scanning tunneling microscope is a tool usually used to analyze an image at ____________ |
| A. | sub-atomic level |
| B. | atomic level |
| C. | micro level |
| D. | macro level |
| Answer» C. micro level | |
| 8. |
Vacancies are _____________ |
| A. | planer defects |
| B. | line defects |
| C. | point defects |
| D. | volume defects |
| Answer» D. volume defects | |
| 9. |
Grains created when a metal solidifies rather slowly in the presence of a steep temperature gradient fall in the category of? |
| A. | equiaxed grains |
| B. | columnar grains |
| C. | elongated grains |
| D. | planer grains |
| Answer» C. elongated grains | |
| 10. |
IN_A_FREE_FALLING_LIQUID,_THE_CROSS_SECTIONAL_AREA_OF_THE_STREAM?$ |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | none of the mentioned |
| Answer» C. remains constant | |
| 11. |
If_the_pouring_basin_has_a_much_larger_cross_sectional_area_than_the_sprue_bottom,_then_the_velocity_of_the_molten_metal_is$ |
| A. | low |
| B. | high |
| C. | normal |
| D. | none of the mentioned |
| Answer» B. high | |
| 12. |
Risers are also calle? |
| A. | spure |
| B. | runners |
| C. | feeders |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 13. |
An ASTM grain size determination is being made from a photomicrograph of a metal at a magnification of 1X. What is the ASTM grain size number of the metal if there are 992 grains per square mm? |
| A. | 6 |
| B. | 7 |
| C. | 7.92 |
| D. | 8.91 |
| Answer» C. 7.92 | |
| 14. |
If there are 930 grains per mm2 on a photomicrograph of a metal at 2X, what is the ASTM grain size number of the metal? |
| A. | 6 |
| B. | 7 |
| C. | 7.92 |
| D. | 8.91 |
| Answer» E. | |
| 15. |
A mixture of a metal(s) and a non-metal(s) is called |
| A. | composite |
| B. | alloy |
| C. | dislocation |
| D. | none of the mentioned |
| Answer» C. dislocation | |
| 16. |
Examples of line defect are |
| A. | vacancies |
| B. | dislocations |
| C. | twins |
| D. | stacking faults |
| Answer» C. twins | |
| 17. |
Scanning tunneling microscope is a tool usually used to analyze an image at |
| A. | sub-atomic level |
| B. | atomic level |
| C. | micro level |
| D. | macro level |
| Answer» C. micro level | |
| 18. |
Vacancies are |
| A. | planer defects |
| B. | line defects |
| C. | point defects |
| D. | volume defects |
| Answer» D. volume defects | |
| 19. |
Grains created when a metal solidifies rather slowly in the presence of a steep temperature gradient fall in the category of |
| A. | equiaxed grains |
| B. | columnar grains |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» C. all of the mentioned | |