A coarse grained grinding wheel is used to grind
A. Hard and brittle materials
B. Soft and ductile materials
C. Hard and ductile materials
D. Soft and brittle materials
Answer: Option B
A. Hard and brittle materials
B. Soft and ductile materials
C. Hard and ductile materials
D. Soft and brittle materials
Answer: Option B
The carbide tools operating at very low cutting speeds (below 30 m/min)
A. Reduces tool life
B. Increases tool life
C. Have no effect on tool life
D. Spoils the work piece
The type of reamer used for reaming operation in a blind hole, is
A. Straight fluted reamer
B. Left hand spiral fluted reamer
C. Right hand spiral fluted reamer
D. Any one of these
High speed steel tools retain their hardness up to a temperature of
A. 250°C
B. 350°C
C. 500°C
D. 900°C
A right answer