Manufacturing And Production Technology
Which of the following statement is wrong as regard to down milling?

The coolant can be poured directly at the cutting zone where the cutting force is maximum.
It can not be used on old machines due to backlash between the feed screw of the table and the nut.
The surface milled appears to be slightly wavy.
The chips are disposed off easily and do not interfere with the cutting.

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Manufacturing And Production Technology
A jig is defined as a device which

All of these
Holds and locates a workpiece and guides and controls one or more cutting tools
Is used to check the accuracy of workpiece
Holds and locates a workpiece during an inspection or for a manufacturing operation

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

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

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