1
GATE PI 1992
Fill in the Blanks
+1
-0
Investment casting uses ...... A........... as pattern material and is preferred for small parts with .......... B.........designs.

A. wax / resin coated sand
B. simple / intricate

2
GATE PI 1992
MCQ (Single Correct Answer)
+1
-0.3
Chaplets are placed between mold in order to
A
promote directional solidification
B
help alloying the metal
C
facilitate easy removal of core from casting
D
prevent core movement due to buoyancy
3
GATE PI 1992
MCQ (Single Correct Answer)
+5
-1.5
If the freezing ratio equal to (casting area/casting volume)/(riser area/riser volume) & the volumetric ratio equal to riser volume/casting volume, for a disc casting of $$20cm$$ diameter and $$10$$ $$cm$$ thick are $$1.4$$ and $$0.8$$ respectively. The corresponding values for a square disc of $$20$$ $$cm$$ side and $$10$$ $$cm$$ thick if the same cylindrical riser with a height to diameter ratio of unity is used in both cases.
A
$$1.4$$ & $$0.68$$
B
$$1.4$$ & $$0.8$$
C
$$1.2$$ & $$0.8$$
D
$$1.2$$ & $$0.68$$
4
GATE PI 1992
Subjective
+2
-0
Match the application with type of pattern GATE PI 1992 Casting - Casting Process Question 9 English
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