Manufacturing And Production Technology
Hardness of green sand mould increases with

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

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Manufacturing And Production Technology
In determining the various forces on the chip, Merchant assumed that the

Cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
Only continuous chip without built-up-edge is produced
All of these
Cutting velocity remains constant

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Manufacturing And Production Technology
Glazing in grinding wheels can be decreased by

Using a softer wheel or by decreasing the wheel speed
Using a harder wheel or by increasing the wheel speed
Using a softer wheel or by increasing the wheel speed
Using a harder wheel or by decreasing the wheel speed

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