High pouring rate leads to
A.mould erosion
B.rough surface
C.excessive shrinkage
D.any of the above
Category: Foundry Technology Mcqs
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
Which grain shape of sand particles is least preferred for foundry sands?
A.Round
B.angular
C.Compound
The advantage of shell moulding is
A.Less sand requirement
B.Process can be used for all cast metals
C.Good accuracy of dimensions
D.All of the above
