MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The dried plaster mould have __________ |
| A. | Low permeability |
| B. | High permeability |
| C. | Moderate permeability |
| D. | Same amount of permeability as other moulds |
| Answer» B. High permeability | |
| 2. |
The baking process in plaster moulding process induces which of the following defects? |
| A. | It depletes down the content of water at a very scarce level |
| B. | It develops microscopic cracks onto the surface of mould |
| C. | It gives the surface improper heat that causes differential heat treatment while casting solidification |
| D. | The Calcium reacts at elevated temperatures used for baking the mould |
| Answer» C. It gives the surface improper heat that causes differential heat treatment while casting solidification | |
| 3. |
What is the range of temperature used for baking molds using plaster moulding process? |
| A. | 50°-100° |
| B. | 80°-120° |
| C. | 120°-260° |
| D. | 250°-300° |
| Answer» D. 250°-300° | |
| 4. |
RPM is only used for castings of which of the following material? |
| A. | Ferrous metals |
| B. | Non-ferrous Metals |
| C. | Plastics |
| D. | Silicone |
| Answer» C. Plastics | |
| 5. |
RPM_IS_ONLY_USED_FOR_CASTINGS_OF_WHICH_OF_THE_FOLLOWING_MATERIAL??$ |
| A. | Ferrous metals |
| B. | Non-ferrous Metals |
| C. | Plastics |
| D. | Silicone |
| Answer» C. Plastics | |
| 6. |
The baking process in plaster moulding process induces which of the following defects?$ |
| A. | It depletes down the content of water at a very scarce level |
| B. | It develops microscopic cracks onto the surface of mould |
| C. | It gives the surface improper heat that causes differential heat treatment while casting solidification |
| D. | The Calcium reacts at elevated temperatures used for baking the mould |
| Answer» C. It gives the surface improper heat that causes differential heat treatment while casting solidification | |
| 7. |
What_is_the_range_of_temperature_used_for_baking_molds_using_plaster_moulding_process?$ |
| A. | 50°-100° |
| B. | 80°-120° |
| C. | 120°-260° |
| D. | 250°-300° |
| Answer» D. 250¬¨¬®‚Äö√†√ª-300¬¨¬®‚Äö√†√ª | |
| 8. |
Which of the following compound forms the bond between sand particles in carbon dioxide moulding process. |
| A. | Sodium |
| B. | Amorphous silica |
| C. | Dehydrated water |
| D. | Carbon Monoxide |
| Answer» C. Dehydrated water | |
| 9. |
Which of the following is a principle binder used in carbon dioxide moulding? |
| A. | Carbon |
| B. | Carbon Dioxide |
| C. | Sodium |
| D. | Sodium silicate |
| Answer» E. | |
| 10. |
Pit moulding is used for _________ |
| A. | Low weighting castings |
| B. | Moderate weighting castings |
| C. | Heavy weighting castings |
| D. | Making castings that requires less time to process |
| Answer» D. Making castings that requires less time to process | |
| 11. |
The_dried_plaster_mould_have___________ |
| A. | Low permeability |
| B. | High permeability |
| C. | Moderate permeability |
| D. | Same amount of permeability as other moulds |
| Answer» B. High permeability | |
| 12. |
R.P.M stands for which of the following moulding process? |
| A. | Rotor Plastic Moulding |
| B. | Raisin Pit Moulding |
| C. | Rubber Plaster Moulding |
| D. | Rough Print Moulding |
| Answer» D. Rough Print Moulding | |
| 13. |
Natural moulding sand have which of the following quality(/ies) __________ |
| A. | Freely available in abundance |
| B. | Contains clay in a large amount |
| C. | Moisture content range is wider |
| D. | All of the mentioned |
| Answer» E. | |
| 14. |
Permeability of green sand ________ |
| A. | Increases with ramming |
| B. | Decreases with ramming |
| C. | Can increase and decrease as well with the amount of ramming |
| D. | Does not alter with ramming |
| Answer» C. Can increase and decrease as well with the amount of ramming | |
| 15. |
The degree or intensity of ramming _________ |
| A. | Increases bulk density |
| B. | Decreases bulk density |
| C. | Does not change bulk density |
| D. | Can increase as well as decrease bulk density |
| Answer» B. Decreases bulk density | |
| 16. |
The Nobake mould have a higher strength as compared to other moulds due to _________ |
| A. | Its higher moisture content |
| B. | Its lower moisture content |
| C. | The property to withstand higher metallostatic pressures during casting |
| D. | The property to adapt to any volume |
| Answer» D. The property to adapt to any volume | |
| 17. |
In Nobake moulding process, the chemical process of hardening of binder starts when ___________ |
| A. | The sand is poured into the mixture |
| B. | The sand is taken out of the mixture |
| C. | The mixture is poured into the moulding flask |
| D. | When the molten metal is poured into the cavity |
| Answer» C. The mixture is poured into the moulding flask | |
| 18. |
Which of the following is the principal material used for Nobake moulding process? |
| A. | Furan or Urethane |
| B. | Wood saw |
| C. | Clay-bentonite |
| D. | Water only |
| Answer» B. Wood saw | |