Workshop Technology
During drawing operation, the states of stress in cup would include

Tensile stress in the wall
Both (A) and (B)
None of these
Compressive stress in the flange

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Workshop Technology
Swab is used for

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

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