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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 | |