Manufacturing And Production Technology
Hardness of green sand mould increases with

Decrease in permeability
Increase in permeability
Increase in moisture content beyond 6 percent
Increase in both moisture content and permeability

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Manufacturing And Production Technology
The strength of a brazed joint

Decreases up to certain gap between the two joining surfaces beyond which it increases
Increases with increase in gap between the two joining surfaces
Decreases with increase in gap between the two joining surfaces
Increases up to certain gap between the two joining surfaces beyond which it decreases

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