Manufacturing And Production Technology
The hardness of a grinding wheel is determined by the

Hardness of the bond
Ability of the grinding wheel to penetrate the work piece
Hardness of abrasive grains
Ability of the bond to retain abrasives

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

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

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