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. |
Investment casting is a cheap process with no limits on size and mass of the casting. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Castings produced by investment casting do not require any further machining for finishing of the surface. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following is the main problem or disadvantage of using mercury as a pattern material? |
| A. | Variation in density of pattern |
| B. | Less formability |
| C. | Keeping of pattern at too low temperature |
| D. | Less strength |
| Answer» D. Less strength | |
| 4. |
If mercury is used as a pattern material in place of wax, then for the preparation of mould, mercury is kept at temperature_____ |
| A. | below -38 ⁰C |
| B. | 0 ⁰C |
| C. | 0 to 38 ⁰C |
| D. | -38 to 0 ⁰C |
| Answer» B. 0 ⁰C | |
| 5. |
The process of dipping and stuccoing is performed continuously to achieve the desired thickness of the mould in the investment casting. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
WHICH_OF_THE_FOLLOWING_IS_THE_MAIN_PROBLEM_OR_DISADVANTAGE_OF_USING_MERCURY_AS_A_PATTERN_MATERIAL??$ |
| A. | Variation in density of pattern |
| B. | Less formability |
| C. | Keeping of pattern at too low temperature |
| D. | Less strength |
| Answer» D. Less strength | |
| 7. |
Investment casting is cheap process with no limits on size and mass of the casting.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Castings produced by investment casting do not require any further machining for finishing of the surface.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Which of the following products is mostly produced by precision investment casting? |
| A. | Aluminium billets |
| B. | Rail |
| C. | Connecting rod and crankshaft |
| D. | Jewellery and surgical instruments |
| Answer» E. | |
| 10. |
If mercury is used as a pattern material in place of wax, then for the preparation of mould, mercury is kept at temperature____? |
| A. | below -38 ‚Äö√Ö‚àûC |
| B. | 0 ‚Äö√Ö‚àûC |
| C. | 0 to 38 ‚Äö√Ö‚àûC |
| D. | -38 to 0 ‚Äö√Ö‚àûC |
| Answer» B. 0 ‚Äö√Ñ√∂‚àö√ñ‚Äö√†√ªC | |
| 11. |
Investment casting is not suitable for producing complex shapes of castings. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Pre-heating of the mould is done to generate adhering characteristics of the moulding surface. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
Which of the following materials takes part in the removal of remnants wax from the mould? |
| A. | Nitroglycerin |
| B. | Phosphoric acid |
| C. | Water |
| D. | Trichloro-ethylene |
| Answer» E. | |
| 14. |
Molten metal is poured into the mould; meanwhile it removes the wax by melting it and vapourization of wax takes place simultaneously in the investment casting. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
The process of dipping and stuccoing is performed continuously to achieve desired thickness of the mould in the investment casting. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
Which of the following liquids is used for the formation of slurry in investment casting? |
| A. | Ammonium hydroxide |
| B. | Carbon disulfide |
| C. | Sodium silicate |
| D. | Glycerin |
| Answer» D. Glycerin | |
| 17. |
Which of the following is used as the pattern material in precision investment casting? |
| A. | Metal |
| B. | Molten wax |
| C. | Plastic |
| D. | Wood |
| Answer» C. Plastic | |