The principal ingredients of moulding sands are
A.silica sand, carbon and water
B.silica sand, clay and water
C.silica sand, dust and crabon
D.silica sand, carbon, hydrocarbons and moisture
Category: Foundry Technology Mcqs
The rammer used for packing the sand in pockets/corners of a mould is known as
A.Floor rummer
B.Peen rammer
C.Hand rammer
Rammer used for moulding the sand in large mould known as
A.Peen rammer
B.Floor rammer
C.Hand rammer
Aluminium castings are not repaired by
A.inert gas metal arc welding
B.braze welding
C.soldering
D.All of the above
Shaving of die casted parts is the process of removal of
A.sprue
B.flash
C.runner
D.none of the above
Which inoculant is used to produced ductile iron?
A.Magnesium
B.Carbon
C.Graphite
D.Fluorides
Which of the following metals has the lowest melting point?
A.Aluminium
B.Magnesium
C.Brass
D.Silver
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
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
