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

Distortion allowance
Shrinkage allowance
Machining allowance
Draft allowance

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Workshop Technology
Lancing is the operation of

Removal of metal to the desired shape from the edge of a plate
Cutting a sheet of metal through part of its length and then bending the cut portion
Cutting a sheet of metal in a straight line along the length
Bending a sheet of metal along a curved axis

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