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

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

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Manufacturing And Production Technology
In a shaper, the length of stroke is increased by

Decreasing the centre distance of bull gear and crank pin
Increasing the length of the arm
Increasing the centre distance of bull gear and crank pin
Decreasing the length of the slot in the slotted lever

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