Plastics
Copper
Cast steel
Carbon steel
A. Plastics
120
170
180
240
Coarse grained grinding wheel is used
Fine grained grinding wheel is used
Medium grained grinding wheel is used
Any one of these
Regulating wheel diameter
Speed of the regulating wheel
Angle between the axes of grinding and regulating wheels
All of the above
Outside diameter but not roundness
Roundness but not outside diameter
Both outside diameter and roundness
Only external threads
Shaping carbide dies and punches having complicated profiles
Making large number of small holes in sieves and fuel nozzles
Embossing and engraving on harder materials
All of these
Nose part, front relief face and side relief face of the cutting tool
Face of the cutting tool at a short distance from the cutting edge
Cutting edge only
Front face only
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
Occurs at the middle
May not occur at the middle
Depends upon the material of the tool
Depends upon the geometry of the tool
0.20
0.30
0.50
0.60
Softer metals
Cotton fabric
Carbon
Graphite
Pull broaching
Push broaching
Surface broaching
Continuous broaching
Internal cylindrical grinding
Form grinding
External cylindrical grinding
Surface grinding
50°C
100°C
175°C
275°C
Becomes longer
May or may not form
Becomes smaller and finally does not form at all
Has nothing to do with speed
Soldering
Brazing
Welding
Clamping
Drill remover
Drill puller
Drift
Drill drawer
0.2 mm
10 mm
20 mm
100 mm
Is zero
Is maximum
Decreases from maximum to zero
Increases from zero to maximum
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
Sensitive drilling machine
Radial drilling machine
Gang drilling machine
Multiple spindle drilling machine
It improves tool life
It improves the surface finish
Both (A) and (B)
None of these
40
30
20
10
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
Cool the tool
Improve surface finish
Cool the workpiece
All of these
Argon H₂
Argon CO₂
Argon Helium
Helium
Metal forming process | Types of stress |
---|---|
1. Coining | P. Tensile |
2. Wire Drawing | Q. Shear |
3. Blanking | R. Tensile and compressive |
4. Deep Drawing | S. Compressive |
1-S, 2-P, 3-Q, 4-R
1-S, 2-P, 3-R, 4-Q
1-P, 2-Q, 3-S, 4-R
1-P, 2-R, 3-Q, 4-S
20° to 40°
40° to 60°
60° to 80°
None of these
Silicon carbide
Aluminium oxide
Sand stone
Diamond
Improves
Deteriorates
Does not effect
None of these
Porosity
Undercut
Under fill
Crack