Question

Effects of increase in Positive Back Rake angle are

• A. 1, 3
• B. 2, 3, 4
• C. 3, 4, 1
• D. 1, 2, 4

Answer 1

The correct option is C 3, 4, 1

Increase in positive back rake angle leads to
${\alpha }_b\uparrow :\text{strength}\downarrow$
$:\text{forces}\downarrow$
$:\text{power}\downarrow$
$:\text{tool life}\uparrow$