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A casting defect which results in general enlargement of a casting is known as

A casting defect which results in general enlargement of a casting is known as Correct Answer Swell

A swell occurs when the mold wall gives way across a whole face, and is caused by an improperly rammed mold.
Burn-on occurs when metallic oxides interact with impurities in silica sands.
The result is sand particles embedded in the surface of the finished casting.

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A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
A 250 mm by 250 mm ingot casting, 1.5 m high and at 1225 K temperature, is stripped from its mold. The casting is made to stand on end on the floor of a large foundry whose wall, floor and roof can be assumed to be at 300 K temperature. Make calculation for the rate of radiant heat interchange between the casting and the room. The casting material has an emissivity of 0.85
The casting processes that require expendable moulds are
P. Investment casting
Q. Low pressure casting
R. Shell moulding
S. Slush casting
When gases are entrapped on the surface of casting due to solidification of metal then oval cavity is formed. This type of casting defect is known as:
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is?