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. |
Refractoriness of a material should always be greater than its application temperatures. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Silicon carbide is widely used as refractory material in the mould making for casting processes. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Refractories are generally inorganic non-metallic materials which can resist very high temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The fluxes used in the casting process must have low vapour pressure. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
What should be the melting point (in ⁰C) of flux used for mixing with aluminium casting? |
| A. | 440⁰C |
| B. | 555⁰C |
| C. | 606⁰C |
| D. | 660⁰C |
| Answer» E. | |
| 6. |
Degassing process during the formation of castings can prevent inclusion of hydrogen absolutely. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following materials are commonly used as flux in the casting process to prevent oxidation? |
| A. | Sodium silicate |
| B. | Lead |
| C. | Sodium chloride |
| D. | Sodium carbonate |
| Answer» D. Sodium carbonate | |
| 8. |
SILICON_CARBIDE_IS_WIDELY_USED_AS_REFRACTORY_MATERIAL_IN_THE_MOULD_MAKING_FOR_CASTING_PROCESSES.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Refractoriness_of_a_material_should_always_be_greater_than_its_application_temperatures.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Refractories are generally inorganic non-metallic materials which can resist very high temperature? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Refractory materials are basically used for strengthening the casting materials used in the casting process. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Which of the following devices is mainly used for thermal analysis of flux? |
| A. | Thermocouple |
| B. | Thermometer |
| C. | Thermo resister |
| D. | Spiral optical tube |
| Answer» B. Thermometer | |
| 13. |
The fluxes used in casting process must have low vapour pressure. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
What should be the melting point (in ‚Äö√Ö‚àûC) of flux used for mixing with aluminium casting?$ |
| A. | 440‚Äö√Ö‚àûC |
| B. | 555‚Äö√Ö‚àûC |
| C. | 606‚Äö√Ö‚àûC |
| D. | 660‚Äö√Ö‚àûC |
| Answer» E. | |
| 15. |
Degassing process during formation of castings can prevent inclusion of hydrogen absolutely. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
Which of the following materials are commonly used as flux in casting process to prevent oxidation? |
| A. | Sodium silicate |
| B. | Lead |
| C. | Sodium chloride |
| D. | Sodium carbonate |
| Answer» D. Sodium carbonate | |
| 17. |
The mixing of flux in the casting material produces endothermic reaction. |
| A. | True |
| B. | False |
| Answer» C. | |