Workshop Technology
In a ___ two or more operations are performed simultaneously at the single stroke of the ram.

Compound die
Simple die
Progressive die
Combination die

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Workshop Technology
Swab is used for

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

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