MCQOPTIONS
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MCQOPTIONS
This section includes 24 Mcqs, each offering curated multiple-choice questions to sharpen your Foundry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The lower fluidity of molten material causes _________ |
| A. | Misrun |
| B. | Cold shut |
| C. | Misrun & Cold shut |
| D. | Fusion |
| Answer» D. Fusion | |
| 2. |
Which of the following defects is not an example of type “pouring material defects”? |
| A. | Misrun |
| B. | Cold shut |
| C. | Slag inclusion |
| D. | Hot tear |
| Answer» E. | |
| 3. |
________________ is the displacement of the mould while closing a mould. |
| A. | Drop |
| B. | Blowholes |
| C. | Crush |
| D. | Mould Shift |
| Answer» D. Mould Shift | |
| 4. |
The best defense against the defects in castings is visual examination and machining. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Surface defects are discovered by radiography. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
WHICH_DEFECT_IS_CAUSED_DUE_TO_THE_CONVERSION_OF_MOISTURE_TO_STEAM_BECAUSE_OF_THE_HEAT_OF_MOLTEN_METAL??$ |
| A. | Open blows |
| B. | Air inclusions |
| C. | Blow holes |
| D. | None of the Mentioned |
| Answer» B. Air inclusions | |
| 7. |
THE_BEST_DEFENSE_AGAINST_THE_DEFECTS_IN_CASTINGS_IS_VISUAL_EXAMINATION_AND_MACHINING.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Defect_which_occurs_due_to_the_solidification_of_casting_is_known_as$ |
| A. | Swell |
| B. | Misrun |
| C. | Metal penetration |
| D. | Shrinkage cavity |
| Answer» E. | |
| 9. |
_________________is_the_displacement_of_the_mould_while_closing_a_mould.$ |
| A. | Drop |
| B. | Blowholes |
| C. | Crush |
| D. | Mould Shift |
| Answer» D. Mould Shift | |
| 10. |
During melting process flux is added to react with impurities to for? |
| A. | Cavity |
| B. | Slag |
| C. | Cold shut |
| D. | Blow holes |
| Answer» C. Cold shut | |
| 11. |
Surface defects are discovered by radiography? |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Defects caused by the chilling of the casting are known as |
| A. | Hot spots |
| B. | Hot tears |
| C. | Shrinkage cavity |
| D. | Swell |
| Answer» B. Hot tears | |
| 13. |
Defects by ____________ are discovered by mechanical testing. |
| A. | Heat-treatment |
| B. | Molding |
| C. | Material |
| D. | Pattern |
| Answer» D. Pattern | |
| 14. |
The lower fluidity of molten material causes |
| A. | Misrun |
| B. | Cold shut |
| C. | Slag inclusion |
| D. | Fusion |
| Answer» C. Slag inclusion | |
| 15. |
Defective casting account normally for the higher losses than any other losses incurred by foundry industry. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
Which of the following defects are the examples of pouring material defects? |
| A. | Misrun |
| B. | Cold shut |
| C. | Slag inclusion |
| D. | All of the Mentioned |
| Answer» E. | |
| 17. |
_______________ occurs in the casting due to the quality variation. |
| A. | Defects |
| B. | Melting |
| C. | Stress-reliving |
| D. | Solidification |
| Answer» B. Melting | |
| 18. |
When the molten metal leaks out of mould which defect occurs? |
| A. | Run out |
| B. | Misrun |
| C. | Fusion |
| D. | Drop |
| Answer» B. Misrun | |
| 19. |
Patterns having insufficient taper result in __________ |
| A. | Fins |
| B. | Blow holes |
| C. | Drop |
| D. | Scab |
| Answer» B. Blow holes | |
| 20. |
Cuts, washes, swell, drop etc. are the examples of which of the following casting defects? |
| A. | Gas defect |
| B. | Pouring material defect |
| C. | Moulding material defect |
| D. | Metallurgical defect |
| Answer» D. Metallurgical defect | |
| 21. |
__________ usually occurs at the parting line and results in excess of metal. |
| A. | Fins |
| B. | Fash |
| C. | Strain |
| D. | All of the mentioned |
| Answer» E. | |
| 22. |
Which gas defect is caused by hydrogen in molten metal? |
| A. | Blow holes |
| B. | Air inclusions |
| C. | Open blows |
| D. | Pin hole porosity |
| Answer» E. | |
| 23. |
Variation in wall thickness occurs due to _________ core boxes. |
| A. | Rigid |
| B. | Flexible |
| C. | Surface finished |
| D. | Worn out |
| Answer» E. | |
| 24. |
______________ is a defect caused by loose dowels. |
| A. | Mould Shift |
| B. | Scab |
| C. | Drop |
| D. | Blow holes |
| Answer» B. Scab | |