Manufacturing And Production Technology
In a planer

Tool moves over reciprocating work
Work is stationary and tool reciprocates
Tool moves over stationary work
Tool is stationary and work reciprocates

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

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

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Manufacturing And Production Technology
Jigs are used

To check the accuracy of workpiece
None of these
For holding and guiding the tool in drilling, reaming or tapping operations
For holding the work in milling, grinding, planing or turning operations

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