21.What is the difference between brazing and soldering?
In brazing the filler material is copper alloy where as in soldering it is lead-tin alloy
22.What is the purpose of back rake angle?
To control chip flow direction and resultant force direction, To protect the tool point, To influence cutting forces
23.Continuous chips are produced when
the rake angle is large
24.Discontinuous chips are produced when
the rake angle is small