In case of consumable patterns
A.labour charges are reduced
B.core is not required
C.moulds are unsplit
D.all of the above
Category: Foundry Technology Mcqs
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
Which of the following is core hardening process?
A.CO2 process
B.Cold set process
C.Furan system
D.All of the above
The disadvantage of hot blast cupola is
A.low coke consumption
B.reduced silicon loss
C.reduced output silicon loss
D.all of the above
Choose the correct statement in respect of die casting machine
A.In hot chamber die casting machine the metal is melted in the machine itself
B.In cold chamber die casting machine metal of low melting point is cast
C.In cold chamber die casting machine there is no need to cool the die from outside
D.none of the above
Sand is broadly specified by
A.grain size
B.colour
C.moisture content
D.all of the above together
A blast furnace operates continuously for
A.hours together
B.days together
C.weeks together
D.months together
The advantage of permanent mould casting is
A.reduced labour charges
B.reduced mould cost
C.dense, fine grained structure
D.all of the above
Magnesium aluminium alloys are grain refined by addition of
A.sulphur
B.manganese
C.carbon
D.tin
Polystyrene often used as a consumable pattern material has a relative density of
A.20 to 25 kg/m3
B.120 to 125 kg/m3
C.1120 to 1125 kg/m3
D.2240 to 2500 kg/m3
