Manufacturing And Production Technology
Which of the following statement is correct about hot machining?

It is used for machining high strength and high temperature resistant materials.
All of these
The rate of tool wear is lower.
It requires less power than machining metals at room temperature.

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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
Trepanning is an operation of

Sizing and finishing a small diameter hole
Smoothing and squaring the surface around a hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
Making a cone-shaped enlargement of the end of a hole

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