Foundry Metallurgy - Study Mode
[#1] Why the quality of sand deteriorates if the same molding sand is used again and again?
Correct Answer
(D) All of these
[#2] Shrinkage allowances is also known as
Correct Answer
(B) contraction allowance
[#3] Green sand consists of
Correct Answer
(A) 70% sand and 30% clay
[#4] The low permeability in sand can cause which of the following defects in casting
Correct Answer
(B) Blow holes
[#5] In a sand casting of a rectangular slab, the thickness of the solidified layer after 2 minutes is known to be 3 cm. Based on Chvorinov's rule, the solidified thickness (in cm) after 4 minutes is
Correct Answer
(C) 6.8