1
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
2
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

3
GATE PI 1992
MCQ (Single Correct Answer)
+1
-0.3
Increase in carbon content in plain carbon steels raise its
A
Ductility and UTS
B
Tensile strength and malleability
C
Tensile strength and hardness
D
Ductility and melting temperature
4
GATE PI 1992
MCQ (Single Correct Answer)
+1
-0.3
The primary function of a riser is to
A
feed molten metal to casting as it solidifies
B
prevent atmospheric air from contaminating the metal in the mold
C
allow gases to easily escape from mold cavity
D
allow molten metal to rise above the mold cavity
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