1
GATE PI 2013
MCQ (Single Correct Answer)
+1
-0.3
A cube shaped casting solidifies in $$5$$ min. The solidification time in min for a cube of the same material, which is $$8$$ times heavier than the original casting, will be
A
$$10$$
B
$$20$$
C
$$24$$
D
$$40$$
2
GATE PI 2011
MCQ (Single Correct Answer)
+1
-0.3
In sand casting fluidity of the molten metal increases with
A
Increases in degree of super-heat
B
Decrease in pouring rate
C
Increase in thermal conductivity of the mold
D
Increase in sand grain size.
3
GATE PI 2011
MCQ (Single Correct Answer)
+1
-0.3
Which of the following casting processes uses expandable pattern and expandable mold
A
Shell mod casting
B
Investment casting
C
Pressure die casting
D
Centrifugal casting
4
GATE PI 2010
MCQ (Single Correct Answer)
+1
-0.3
Solidification time of a metallic alloy casting is
A
Directly proportional to its surface area
B
Inversely proportional to the specific heat of the cast material
C
Inversely proportional to the thermal diffusivity of the mould material
D
Inversely proportional to the pouring temp
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