Manufacturing And Production Technology
The lip clearance angle is the angle formed by the

Leading edge of the land with a plane having the axis of the drill
Chisel edge and the lip as viewed from the end of a drill
None of the listed here
Flank and a plane at right angles to the drill axis

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Manufacturing And Production Technology
Fixtures are used

None of these
To check the accuracy of workpiece
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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