MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following parts is used as exothermic materials or insulators for the increase in efficiency of the riser? |
| A. | Chills |
| B. | Feeding aids |
| C. | Biscuit |
| D. | Filler |
| Answer» C. Biscuit | |
| 2. |
In casting system, the riser is located at the lightest section to avoid any disturbance. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The core material should be highly refractory in nature to avoid any damages to it. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which of the following factors is used to define the casting type in riser design? |
| A. | Plating factor |
| B. | Ranginess factor |
| C. | Caine factor |
| D. | Pseudo factor |
| Answer» C. Caine factor | |
| 5. |
Which of the following methods is used for the determination of optimum riser size? |
| A. | RMS method |
| B. | Modulus method |
| C. | Finn method |
| D. | Ring method |
| Answer» C. Finn method | |
| 6. |
A sphere can be used as a riser because of its freezing ratio, which is greater than unity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following relations is given by chvorinov for the solidification time of a casting? |
| A. | t<sub>s</sub> = k(V/SA)<sup>2</sup> |
| B. | t<sub>s</sub> = k(V/SA) |
| C. | t<sub>s</sub> = k(V*SA)<sup>2</sup> |
| D. | t<sub>s</sub> = k(V/SA)<sup>3</sup> |
| Answer» B. t<sub>s</sub> = k(V/SA) | |
| 8. |
The cooling characteristics of casting can be represented by the_____ |
| A. | volume to surface area ratio |
| B. | product of volume and surface area |
| C. | surface area to volume ratio |
| D. | surface area to perimeter ratio |
| Answer» D. surface area to perimeter ratio | |
| 9. |
Improper risering has always resulted in the formation of voids inside the castings. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
There is no requirement of any risers for the casting of grey cast iron. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Which of the following materials can have the negative volumetric shrinkage of the casting? |
| A. | Aluminium |
| B. | Steel |
| C. | Zinc |
| D. | Grey cast iron |
| Answer» E. | |
| 12. |
The main function of a riser is to maintain the escaping of gases from the casting during solidification. |
| A. | True |
| B. | False |
| Answer» C. | |