Truing
Dressing
Facing
Clearing
B. Dressing
Coefficient of friction
Microstructure
Work hardening characteristics
All of these
Single point cutting tool
Two point cutting tool
Three point cutting tool
Multipoint cutting tool
Face
Fillet
Land
Lead
Melting and Evaporation
Melting and Corrosion
Erosion and Cavitations
Cavitations and Evaporation
A to H
I to P
Q to Z
A to P
Coarse grained grinding wheel is used
Fine grained grinding wheel is used
Medium grained grinding wheel is used
Any one of these
Mild steel
Alloy steel
Pig iron
Chilled cast iron
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
350°C
500°C
900°C
1100°C
Minimum at the beginning of the cut and maximum at the end of the cut
Maximum at the beginning of the cut and minimum at the end of the cut
Uniform throughout the cut
None of these
Hard and brittle materials
Soft and ductile materials
Hard and ductile materials
Soft and brittle materials
The modulus of elasticity of metal
The shear strength of metal
The bulk modulus of metal
The yield strength of metal
Work surface
Tool face
Machine surface
None of these
Grinding at high speed results in the reduction of chip thickness and cutting forces per grit.
Aluminium oxide wheels are employed.
The grinding wheel has to be of open structure.
All of the above
ARC welding
Submerged ARC welding
TIG welding
MIG welding
(D - d)/2L
(D - d)/L
(D - d)/2
D - d
1 in 10
1 in 15
1 in 20
1 in 30
High carbon steel tools
High speed steel tools
Cemented carbide tools
All of these
Internal taper
External taper
Internal and external taper
No taper
Plastic deformation of metal
Burnishing friction
Friction between the moving chip and the tool face
None of the above
Half
Two times
Eight times
Sixteen times
Geometric progression
Arithmetic progression
Harmonic progression
None of these
Equal to
Less than
More than
None of these
Counter-boring
Grooving
Knurling
Facing
Reduces tool life
Increases tool life
Have no effect on tool life
Spoils the work piece
Induction motor
DC servo motor
Stepper motor
Linear servo motor
1 to 3 m/min
5 to 10 m/min
10 to 14 m/min
14 to 20 m/min
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
True feed
Chip thickness
Rake angle of the cutting tool
All of these
It cannot be used on old machines due to backlash between the feed screw of the table and the nut.
The chips are disposed off easily and do not interfere with the cutting.
The surface milled appears to be slightly wavy.
The coolant can be poured directly at the cutting zone where the cutting force is maximum.