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

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

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Manufacturing And Production Technology
The strength of a brazed joint

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

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