The cutting edge is inclined at an angle less than 90° with the normal to the velocity of the tool.
Frequently, more than one cutting edges are in action.
The chip flows on the tool face at an angle less than 90° with the normal on the cutting edge.
All of the above
D. All of the above
Flat type
V-type
Dovetail type
Any one of these
Body centred cubic
Base centred cubic
Hexagonal closed packed
Body centred tetragonal
Spot facing
Boring
Tapping
Drilling
0.2 mm
10 mm
20 mm
100 mm
10 r.p.m.
20 r.p.m.
120 r.p.m.
180 r.p.m.
Cutting forces and power consumption
Tool life
Type of chips and shear angle
All of these
Help in the movement of the sparks
Control the spark discharges
Act as coolant
All of these
Equal to 30°
Less than 30°
More than 30°
None of these
Silicon carbide
Aluminium oxide
Sand stone
Diamond
Bevelling the extreme end of a workpiece
Embossing a diamond shaped pattern on the surface of a workpiece
Reducing the diameter of a workpiece over a very narrow surface
Enlarging the end of a hole cylindrically
Flat drill
Straight fluted drill
Parallel shank twist drill
Tapered shank twist drill
Carbide tools
Heavy loads
Harder materials
All of these
Diamond is very hard and wear resistant
It occupies very little space
It helps in assembly with tolerance on centre distance
It has a long life
An eccentric work
A heavy work
A thin work
None of these
Boring
Drilling
Reaming
Internal turning
Increasing the cutting speed
Decreasing the cutting speed
Increasing the depth of cut
Increasing the feed rate
Perform burnishing operation
Remove minimum metal
Remove maximum metal
Remove no metal
10 to 20 m/min
18 to 30 m/min
24 to 45 m/min
60 to 90 m/min
Brittle metals
Ductile metals
Hard metals
Soft metals
3 to 12 mm
5 to 20 mm
8 to 30 mm
15 to 40 mm
Occurs at the middle
May not occur at the middle
Depends upon the material of the tool
Depends upon the geometry of the tool
Reduces tool life
Increases tool life
Have no effect on tool life
Spoils the work piece
Soft grade
Medium grade
Hard grade
None of these
Drill remover
Drill puller
Drift
Drill drawer
Cylindrical grinder
Internal grinder
Surface grinder
Tool and cutter grinder
Increasing the centre distance of bull gear and crank pin
Decreasing the centre distance of bull gear and crank pin
Increasing the length of the arm
Decreasing the length of the slot in the slotted lever
High temperature developed at the contact of the wheel face and work
Grinding hard work
Low speed of wheel
High speed of wheel
Conventional milling
Climb milling
End milling
Face milling
Pantograph milling machine
Profiling machine
Planetary milling machine
Piano miller
Melting and Evaporation
Melting and Corrosion
Erosion and Cavitations
Cavitations and Evaporation