Metallurgical Engineering
GATE MT concept:casting-defects PYQs
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How to practice concept:casting-defects
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Questions 1–2 of 2. Imported answers require independent review unless marked reviewed.
Question 42
Open questionMTMCQ2 marksNeeds review
Match the casting defects in Column I with the characteristic features in Column II.
Column I
P. Misrun
Q. Expansion scab
R. Pin holes
S. Hot tearing
Column II
Penetration of liquid metal behind surface layer of sand moulds
Metal solidifies prematurely in the mould and some sections of the casting are not filled
Cracking because of restraint to contraction in certain areas of the casting during solidification and cooling to room temperature
Evolution of gases during solidification resulting in porosity
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Open questionMTMCQ1 markNeeds review
In green sand molding, the casting defect resulting from the displacement of mould cavity by an oversized core is known as ________
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