While selecting wood for patterns, one should
A.discard the rot
B.select the cross-grained woods
C.select the fresthy filled wood
D.discard the seasoned wood
Category: Foundry Technology Mcqs
Coke used in cupola is in the form of
A.coal dust
B.pulverized coal
C.lumps
D.any of the above
Which heat treatment is applicable to aluminium alloy castings?
A.Stabilizing
B.Solution heat treatment
C.Artificial ageing
D.all of the above
Distortion in castings can be reduced by
A.modifying design
B.providing sufficient machining allowance
C.improving foundry practice
D.all of the above
On the interior surfaces the draft allowance is usually
A.10 to 20 mm/metre
B.40 to 60 mm/metre
C.100 to 120 mm/metre
D.200 to 225 mm/metre
Permanent mould casting is also known as
A.gravity die casting
B.chill casting
C.slush casting
D.short casting
Shell moulding is uneconomical for
A.small castings
B.large scale production
C.small scale production
D.all of the above
The most suitable metals for die casting are
A.zinc and its alloys
B.copper and its alloys
C.aluminium and its alloys
D.none of the above
In case of consumable patterns
A.labour charges are reduced
B.core is not required
C.moulds are unsplit
D.all of the above
The tool used to make small holes in the sand mould to allow passage of gases/steam is known as
A.Draw spike
B.Vent wire
C.Draw screw
