A.grain size
B.grain shape
C.moisture content
D.all of the above
A.charcoal
B.bone ash
C.phophorous
D.calcium carbonate
A.Extreme dimensional accuracy
B.Excellent surface finish
C.Low cost
D.No disfiguring parting line as found on castings made by cope and drag methods
A.Die casting
B.Dry sand casting
C.Slush casting
D.Carbondioxide casting
A.reduce core sag
B.support heavy cores
C.compensate for inadequate coreseats
D.all of the above
A.1.5 kg/cm2
B.15 kg/cm2
C.150 kg/cm2
D.500 kg/cm2
A.Mak the mould permeable
B.Act as a binder in the mould
C.Make the mould refractory
A.Enamelling
B.Electroplating
C.Galvanising
D.Chilling
A.bench moulding
B.floor moulding
C.plate moulding
D.none of the above
