Shell moulding can be used for
A.producing thin castings
B.better surface finish
C.tolerances of the order of 0.002 mm per mm
D.all of the above
Category: Foundry Technology Mcqs
The function of ejection pin in die casting is to
A.pushout casting off the die
B.provide movable core spaces
C.facilitate die casting of several components
D.none of the above
As the moisture content of sand increases
A.permeability increases
B.permeability decreases
C.permeability remains unchanged
Shatter test is a measure of
A.sand toughness
B.sand adhesiveness
C.sand cohesiveness
D.none of the above
Wax patterns are used in
A.non-ferrous castings
B.investment casting process
C.machine moulding process
D.all of the above
High silicon irons are
A.resistant to wear
B.machinable
C.malleable
D.brown in colour
Hairlines in die casted materials result from
A.chemical attack
B.mechanical erosion
C.thermal fatigue
D.all of the above
The method in which green sand is generally used is
A.pit moulding
B.plate moulding
C.bench moulding
D.none of the above
Hand tool used in foundry shop for mixing and conditioning the foundry sand is termed
A.Riddle
B.Shovel
C.Trowel
Cohesiveness of sand depends on
A.grain size and shape of sand particles
B.bonding material
C.moisture content
D.all of the above
