A designer would attempt to avoid bosses and pads in the casting because
A) projections such as bosses and pads can not merge with thinner sections
B) it is difficult to incorporate in pattern
C) they being thicker will take longer to solidify and hence will suffer from residual stresses and coarse grains
D) mould formation is difficult in pressence of boss
Correct Answer:
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Q10: Clay used for foundry sand should be
A)kaolinite
B)montmorillonite
C)illite
D)any
Q11: Phenolic thermo-setting plastics are finding application in
Q12: The location of riser least depends on
A)the
Q13: In case of cast steel, the contraction
Q14: The "Green sand" is termed so, because
A)it
Q16: Padding is
A)a method for production of chilled
Q17: In case of cored aluminium castings, the
Q18: Chemical dipping of die casted parts is
Q19: Head storage capacity of moulding sand can
Q20: Sand grains which give high mould strength
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