MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Bentonite is commonly used as bonding material for dry sand cores. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following sands has the highest thermal conductivity? |
| A. | Silica sand |
| B. | Zircon sand |
| C. | Chromite sand |
| D. | Olivine sand |
| Answer» C. Chromite sand | |
| 3. |
In the given below graph, which curve represents the permeability of the green sand mould with the % of the water content? |
| A. | a |
| B. | b |
| C. | c |
| D. | d |
| Answer» D. d | |
| 4. |
Refractoriness of the green sand mould shows _____ |
| A. | High strength |
| B. | Toughness |
| C. | High temperature resistant |
| D. | High porosity |
| Answer» D. High porosity | |
| 5. |
Bentonite is commonly used as bonding material for dry sand cores.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which_of_the_following_sands_has_highest_thermal_conductivity?$ |
| A. | Silica sand |
| B. | Zircon sand |
| C. | Chromite sand |
| D. | Olivine sand |
| Answer» C. Chromite sand | |
| 7. |
Refractoriness of the green sand mould shows ____? |
| A. | High strength |
| B. | Toughness |
| C. | High temperature resistant |
| D. | High porosity |
| Answer» D. High porosity | |
| 8. |
Which of the following reasons stand for the crumbling of green sand mould? |
| A. | The sand grains are not adequately bonded |
| B. | Excess of water and clay mixture |
| C. | Due to the presence of impurities in the green sand mould |
| D. | Fine grain size |
| Answer» B. Excess of water and clay mixture | |
| 9. |
Which test is performed for the study of grain size distribution of moulding sand? |
| A. | Screening test |
| B. | Whirl test |
| C. | Crushing test |
| D. | Shearing test |
| Answer» B. Whirl test | |
| 10. |
What is the advantage of having a low bulk density of a sand-mix? |
| A. | Higher strength |
| B. | Good refractoriness |
| C. | Higher flow ability |
| D. | Higher permeability |
| Answer» E. | |
| 11. |
Hardness of green sand mould can be increase by _____ |
| A. | increase in permeability |
| B. | decrease in permeability |
| C. | increase in moisture content beyond 6 percent |
| D. | increase in both moisture content and permeability |
| Answer» C. increase in moisture content beyond 6 percent | |
| 12. |
Which of the following is not a property of a sand mould? |
| A. | Fluidity |
| B. | Strength |
| C. | Collapsibility |
| D. | Permeability |
| Answer» B. Strength | |
| 13. |
In green sand mould, what is the indication of the word green? |
| A. | It shows polymeric mould has been cured |
| B. | Mould is green in color |
| C. | Mould contains moisture |
| D. | Mould has been totally dried |
| Answer» D. Mould has been totally dried | |
| 14. |
In a green sand moulding process, uniform ramming leads to _____ |
| A. | uniform flow of molten into the mould cavity |
| B. | less chance of gas porosity |
| C. | less sane expansion type of casting defect |
| D. | greater dimensional stability of the casting |
| Answer» E. | |