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
Flank and a plane at right angles to the drill axis
None of the listed here

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Manufacturing And Production Technology
The strength of a brazed joint

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

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