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

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
Leading edge of the land with a plane having the axis of the drill

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Manufacturing And Production Technology
When the temperature of a solid metal increases,

Both strength and ductility of the metal decreases
Strength of the metal increases but ductility decreases
Strength of the metal decreases but ductility increases
Both strength and ductility of the metal increases

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