Workshop Technology - Study Mode

[#101] The centrifugal casting method, is used for casting articles of
Correct Answer

(B) Symmetrical shape about horizontal axis

Explanation

Solution: The centrifugal casting method, is used for casting articles of Symmetrical shape about horizontal axis

[#102] A casting defect which results in general enlargement of a casting is known as
Correct Answer

(C) Swell

Explanation

Solution: 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.

[#103] A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
Correct Answer

(B) Sand wash

Explanation

Solution: A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as Sand wash

[#104] When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
Correct Answer

(C) Permanent mould casting method

Explanation

Solution: When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as Permanent mould casting method

[#105] Swab is used for
Correct Answer

(C) Moistening the sand around the edge before removing pattern

Explanation

Solution: Swab is a hemp fiber brush used for moistening the edges of sand mould, which are in contact with the pattern surface, before withdrawing the pattern. It is also used for coating the liquid blacking on the mould faces in dry sand moulds.