11. Match the requirement from Group 1 with the suitable casting process from Group 2.
Group 1
Group 2
P. Good surface finish
1. Slush casting
Q. Expandable mould
2. Pressure die casting
R. Heavy casting
3. Investment casting
S. Hollow ornamental casting
4. Sand casting
| Group 1 | Group 2 |
| P. Good surface finish | 1. Slush casting |
| Q. Expandable mould | 2. Pressure die casting |
| R. Heavy casting | 3. Investment casting |
| S. Hollow ornamental casting | 4. Sand casting |
12. . . . . . . . . process removes fines and foreign matter, partly clay coating from the sand and partially removes the carbonaceous and organic materials from sand grains.
13. Sprue in casting refers to . . . . . . . .
14. The shrinkage allowance for 6mm section malleable cast iron is . . . . . . . . mm.
15. If two parts of a mould are not joined properly, the casting may have the following defect.
16. The solidification time for a cube casting having 5 cms side is 10 minutes. Under similar condition of heat transfer, the solidification time, inminutes, for a cube casting having 10 cm side will be
17. In a casting, shrinkage occurs
18. A jet engine turbine blade is normally manufactured by
19. The casting processes that require expendable moulds are
P. Investment casting
Q. Low pressure casting
R. Shell moulding
S. Slush casting
P. Investment casting
Q. Low pressure casting
R. Shell moulding
S. Slush casting