Providing more than adequate machining allowance
A.improves the strength of the casting
B.reduces the strength of the casting
C.increases machining cost
D.reduces machining cost
Category: Foundry Technology Mcqs
Composition of cast iron can be better controlled when melted in
A.pit furnace
B.cupola
C.arc furnace
D.none of the above
High pouring rate leads to
A.mould erosion
B.rough surface
C.excessive shrinkage
D.any of the above
Grey cast iron is
A.costlier than other varieties of cast iron
B.poor in machining ability
C.resistant to shock
D.least fluid in molten condition
The advantage of centrifugal casting is
A.dense castings
B.elimination of cores
C.mass production with reduced rejection possible
D.all of the above
Hot blast of air is supplied to the blast furnace through
A.stoves
B.tuyers
C.prop
D.spout
Melting point of copper
A.665?C
B.1083?C
C.1444?C
D.1576?C
Which wood can be used for making patterns?
A.Mathogany
B.Pine wood
C.Teak wood
D.any of the above
Skeleton patterns are generally used for
A.small casting
B.non-ferrous castings
C.large castings
D.hollow castings
During the passage of molten metal through the coke, the carbon percentage of the molten metal increases. The absorption of carbon depends on
A.size of the coke
B.temperature
C.time allowed for molten metal to remain in the cupola
D.all of the above
