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

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Manufacturing And Production Technology
Which of the following statement is correct regarding grinding of high carbon steel?

Grinding at high speed results in the reduction of chip thickness and cutting forces per grit.
Aluminium oxide wheels are employed.
All of these
The grinding wheel has to be of open structure.

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