Workshop Technology
A taper provided on the pattern for its easy and clean withdrawal from the mould is known as

Distortion allowance
Machining allowance
Draft allowance
Shrinkage allowance

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Workshop Technology
Swab is used for

Smoothing and cleaning out depressions in the mould
Cleaning the moulding sand
Reinforcement of sand in the top part of the moulding box
Moistening the sand around the edge before removing pattern

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Workshop Technology
In a hot chamber die casting machine

Ferrous alloys with high melting temperature are casted
Ferrous alloys with low melting temperature are casted
Nonferrous alloys with high melting temperature are casted
Nonferrous alloys with low melting temperature are casted

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