Cross direction only
Longitudinal direction only
Both cross and longitudinal direction
Any direction
C. Both cross and longitudinal direction
Gang milling
Straddle milling
String milling
Side milling
Increase in moisture content beyond 6 percent
Increase in permeability
Decrease in permeability
Increase in both moisture content and permeability
Vertical boring machine
Horizontal boring machine
Precision boring machine
Jig boring machine
Path of shear is short and chip is thin
Path of shear is large and chip is thick
Path of shear is short and chip is thick
Path of shear is large and chip is thin
Number of pieces machined between tool sharpenings
Time the tool is in contact with the job
Volume of material removed between tool sharpenings
All of the above
Hard materials
Brittle materials
Finishing cuts
All of these
1 to 3 m/min
5 to 10 m/min
10 to 14 m/min
14 to 20 m/min
Tungsten carbide
Brass or copper
Diamond
Stainless steel
Equal to
Less than
More than
None of these
The diamond is the hardest tool material and can run at cutting speeds about 50 times that of high speed steel tool.
The ceramic tools can be used at cutting speeds 40 times that of high speed steel tools.
The cemented carbide tools can be used at cutting speeds 10 times that of high speed steel tools.
The ceramic tools can withstand temperature upto 600°C only.
Direction of the tool axis
Direction of tool travel
Perpendicular to the direction of the tool axis
Central plane of the workpiece
For holding and guiding the tool in drilling, reaming or tapping operations
For holding the work in milling, grinding, planing or turning operations
To check the accuracy of workpiece
None of the above
Torch brazing
Dip brazing
Resistance brazing
Furnace brazing
Equal to 118°
Less than 118°
More than 118°
Any one of these
40
30
20
10
Brittle material
Tough material
Hard material
Ductile material
Lower chip-tool contact area and larger shear angle
Higher chip-tool contact area and smaller shear angle
Lower chip-tool contact area and smaller shear angle
Higher chip-tool contact area and larger shear angle
Becomes longer
May or may not form
Becomes smaller and finally does not form at all
Has nothing to do with speed
Fatigue strength
Work hardening
Fracture strength
Elastic constant
Reduces tool life
Increases tool life
Have no effect on tool life
Spoils the work piece
Side cutting tool
Front cutting tool
End cutting tool
None of these
120
170
180
240
3° to 8°
20° to 30°
60° to 90°
90° to 120°
Simple heating
Flame heating
Induction heating
Any one of these
Reduce built up edge
Break up chips
Improve machinability
All of these
Corrosion
Erosion
Fusion
Ion displacement
Zero rake angle
Positive rake angle
Negative rake angle
Point angle
An eccentric work
A heavy work
A thin work
None of these
Cutting key ways on shafts
Cutting external screw threads
Cutting teeth of spur gears
All of these
Conical locator
Cylindrical locator
Diamond pin locator
Vee locator