MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Rapid heat extraction from the casting causes narrowing of liquid-solid zone which sweeps itself across the molten metal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following parts can be used to have uniform crystallization at all over the points in the casting material? |
| A. | Chaplets |
| B. | Biscuit |
| C. | Chills |
| D. | Core |
| Answer» D. Core | |
| 3. |
The presence of solid crystals at solid-liquid interface makes feeding of molten metal more easily. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
A dendritic crystal growth structure is formed by the difference in progress of crystallization at different points in the casting material. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The difference in the progress of crystallization at different points in the casting material causes fast and abrupt growth of crystals. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
A_DENDRITIC_CRYSTAL_GROWTH_STRUCTURE_IS_FORMED_BY_THE_DIFFERENCE_IN_PROGRESS_OF_CRYSTALLIZATION_AT_DIFFERENT_POINTS_IN_THE_CASTING_MATERIAL.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which of the following parts can be used to have uniform crystallization at all over the points in the casting material?$ |
| A. | Chaplets |
| B. | Biscuit |
| C. | Chills |
| D. | Core |
| Answer» D. Core | |
| 8. |
The_presence_of_solid_crystals_at_solid-liquid_interface_makes_feeding_of_molten_metal_more_easily.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Rapid_heat_extraction_from_the_casting_causes_narrowing_of_liquid-solid_zone_which_sweeps_itself_across_the_molten_metal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
The difference in the progress of crystallization at different points in the casting material causes fast and abrupt growth of crystals? |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which of the following factors is independent to the direction of crystal growth in an alloy? |
| A. | Thermal gradient |
| B. | Composition gradient |
| C. | Variation of solidus temperature |
| D. | Material aesthetics |
| Answer» E. | |
| 12. |
An alloy, unlike a pure metal, does not have a sharply defined freezing temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
As the solidification progresses gradually inwards, small crystals with systematic orientation are formed. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
Which of the following types of crystal are formed near the mould face during solidification? |
| A. | Big crystals with random orientation |
| B. | Small crystals with systematic orientation |
| C. | Small crystals with random orientation |
| D. | Big crystals with systematic orientation |
| Answer» D. Big crystals with systematic orientation | |
| 15. |
In the case of pure metals, liquid metal should be cooled above their freezing points. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
A proper care should be taken while cooling or solidification of castings to avoid defect formation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
Which of the following characteristics is mainly considered for the solidification of castings? |
| A. | Appearance |
| B. | Crystal structure |
| C. | Moulding capacity |
| D. | Surface finish |
| Answer» C. Moulding capacity | |