15 to 19 m/min
25 to 31 m/min
60 to 90 m/min
90 to 120 m/min
C. 60 to 90 m/min
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.
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
Holds and locates a workpiece and guides and controls one or more cutting tools
Holds and locates a workpiece during an inspection or for a manufacturing operation
Is used to check the accuracy of workpiece
All of the above
Independent of index change gear ratio
Dependent on speed change gear ratio
Interrelated to index change gear ratio
Independent of speed and index change gear ratio
Increase in coefficient of friction
Decrease in coefficient of friction
Decrease in roll radius
Decrease in roll velocity
Plastics
Copper
Cast steel
Carbon steel
A set of grid points on the surface
A set of grid control points
Four bounding curves defining the surface
Two bounding curves and a set of grid control points
Cylindrical grinder
Internal grinder
Surface grinder
Tool and cutter grinder
Aluminium oxide
Boron carbide
Silicon carbide
Any one of these
The larger side rake angle produces chipping.
The smaller rake angle produces excessive wear and deformation in tool.
The side cutting edge angle (less than 15°) increases tool life.
The increase in nose radius decreases tool life.
Rate of production is very high
High accuracy and high class of surface finish is possible
Roughing and finishing cuts are completed in one pass of the tool
All of the above
350°C
500°C
900°C
1100°C
Friction zone
Work-tool contact zone
Shear zone
None of these
High speed steel
Carbon steel
Stainless steel
Either (A) or (B)
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
(4π/6)³ × (r/l)⁶
(4π/6) × (r/l)²
(4π/6)² × (r/l)³
(4π/6)² × (r/l)⁴
Mixing
Sintering
Impregnation
Infiltration
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
Its end tapered for about three or four threads
Its end tapered for about eight or ten threads
Full threads for the whole of its length
None of the above
Silicon carbide
Aluminium oxide
Sand stone
Diamond
Polymeric mould has been cured
Mould has been totally dried
Mould is green in colour
Mould contains moisture
Shear velocity
Chip velocity
Cutting velocity
Mean velocity
Internal and external surfaces
Round or irregular shaped holes
External flat and contoured surfaces
All of these
Flat drill
Straight fluted drill
Parallel shank twist drill
Tapered shank twist drill
Increases tool life
Decreases tool life
Produces chipping and decreases tool life
Results in excessive stress concentration and greater heat generation
Stroke length
Motor power
Mass of machine
Rate size
High thermal conductivity of titanium
Chemical reaction between tool and work
Low tool-chip contact area
None of these
10 to 20 m/min
18 to 30 m/min
24 to 45 m/min
60 to 90 m/min
Tool is stationary and work reciprocates
Work is stationary and tool reciprocates
Tool moves over stationary work
Tool moves over reciprocating work
Ultrasonic welding
Forge welding
Electron beam welding
Friction welding