MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 20 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. |
Scabs are casting defects which? |
| A. | result in a mismatch of the top and bottom parts of a casting |
| B. | result near the ingates as rough lumps on the surface of a casting |
| C. | occur as rough and irregular projections on the surface of the casting |
| D. | occur as smooth and regular projections on the surface of the casting |
| Answer» D. occur as smooth and regular projections on the surface of the casting | |
| 2. |
A casting defect which occurs due to improper venting of sand is known as? |
| A. | Cold shuts |
| B. | Blow holes |
| C. | Shift |
| D. | Hot tear |
| Answer» D. Hot tear | |
| 3. |
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is? |
| A. | Shift |
| B. | Sand wash |
| C. | Swell |
| D. | Hot tear |
| Answer» C. Swell | |
| 4. |
The defect caused when two streams do not fuse together (while melting), thus forming discontinuity in casting is termed as? |
| A. | cold shut |
| B. | misrun |
| C. | hot tear |
| D. | porosity |
| Answer» B. misrun | |
| 5. |
The defect caused when the melt is unable to fill the mold cavity completely and thus leaves cavities is termed as? |
| A. | cold shut |
| B. | misrun |
| C. | hot tear |
| D. | porosity |
| Answer» C. hot tear | |
| 6. |
In casting, which of the following are not material defects? |
| A. | cut and washes |
| B. | metal penetration |
| C. | fusion |
| D. | hot tears |
| Answer» E. | |
| 7. |
The defects caused by liquid shrinkage during the solidification of the casting? |
| A. | gas defects |
| B. | shrinkage cavities |
| C. | molding material defects |
| D. | hot tears |
| Answer» C. molding material defects | |
| 8. |
The causes of gas defects are ___________ |
| A. | metal contains gas |
| B. | mold is too hot |
| C. | poor mold burnout |
| D. | all of the mentioned |
| Answer» E. | |
| 9. |
The defects caused by trapping a gas in molten metal or by mold gases while pouring the melt is known as? |
| A. | Gas defects |
| B. | Shrinkage cavities |
| C. | Molding material defects |
| D. | Pouring defects |
| Answer» B. Shrinkage cavities | |
| 10. |
The major defects of casting are __________ |
| A. | gas defects |
| B. | shrinkage cavities |
| C. | molding material defects |
| D. | all of the mentioned |
| Answer» E. | |
| 11. |
A_CASTING_DEFECT_WHICH_OCCURS_DUE_TO_IMPROPER_VENTING_OF_SAND_IS_KNOWN_AS?$ |
| A. | Cold shuts |
| B. | Blow holes |
| C. | Shift |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 12. |
Scabs_are_casting_defects_which$ |
| A. | result in a mismatch of the top and bottom parts of a casting |
| B. | result near the ingates as rough lumps on the surface of a casting |
| C. | occur as rough and irregular projections on the surface of the casting |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 13. |
A casting defect which occurs near the ingates as rough lumps on the surface of a casting i? |
| A. | Shift |
| B. | Sand wash |
| C. | Swell |
| D. | None of the mentioned |
| Answer» C. Swell | |
| 14. |
A ______________ is caused when two streams while meeting in the mold cavity, do not fuse together properly thus forming a discontinuity in the casting. |
| A. | cold shut |
| B. | mis run |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» B. mis run | |
| 15. |
A __________ is caused when the metal is unable to fill the mold cavity completely and thus leaves unfilled cavities. |
| A. | cold shut |
| B. | mis run |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» C. all of the mentioned | |
| 16. |
The molding material defects are |
| A. | cut and washes |
| B. | metal penetration |
| C. | fusion |
| D. | all of the mentioned |
| Answer» E. | |
| 17. |
___________ are caused by liquid shrinkage occurring during the solidification of the casting. |
| A. | gas defects |
| B. | shrinkage cavities |
| C. | molding material defects |
| D. | none of the mentioned |
| Answer» C. molding material defects | |
| 18. |
The causes of gas defects are |
| A. | metal contains gas |
| B. | mold is too hot |
| C. | poor mold burnout |
| D. | all of the mentioned |
| Answer» E. | |
| 19. |
__________ is a condition existing in a casting caused by the trapping of gas in the molten metal or by mold gases evolved during the pouring of the casting. |
| A. | gas defects |
| B. | shrinkage cavities |
| C. | molding material defects |
| D. | none of the mentioned |
| Answer» B. shrinkage cavities | |
| 20. |
The major defects of casting are |
| A. | gas defects |
| B. | shrinkage cavities |
| C. | molding material defects |
| D. | all of the mentioned |
| Answer» E. | |