1
GATE PI 2003
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following is NOT a property of a sand mold?
A
Permeability
B
Collapsibility
C
Strength
D
Fluidity
2
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
A casting of size $$100\,\,mm \times 100\,\,mm \times 50\,\,mm$$ is required. Assume volume shrinkage of casting $$2.6\% $$. If the height of the riser is $$80$$ $$mm$$ and riser volume desired is $$4$$ times the shrinkage in casting, what is the appropriate riser diameter in $$mm?$$
A
$$14.38$$
B
$$20.34$$
C
$$28.76$$
D
$$57.52$$
3
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
Gating ratio of $$1:2:4$$ is used to design the gating system for magnesium alloy casting. This gating ratio refers to the cross section areas of the various gating elements as given below

$$1.$$ $$Down$$ $$sprue$$ $$\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$$ $$2.$$ $$runner$$ $$\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$$ $$3.$$ $$Ingates$$
The sequence of the above elements in the ratio $$1:2:4$$ is

A
$$1,2$$ & $$3$$
B
$$1,3$$ & $$2$$
C
$$2,3$$ & $$1$$
D
$$3,1$$ & $$2$$
4
GATE PI 2003
MCQ (Single Correct Answer)
+2
-0.6
Chapters are placed between mould and core surfaces in order to :
A
Reduce directional solidification
B
Help local alloying of molten metal
C
Help easy removal of core from casting
D
Prevent core movement due to buoyancy
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12