ARC welding
Submerged ARC welding
TIG welding
MIG welding
D. MIG welding
Gas tungsten arc welding
Resistance spot welding
Friction welding
Submerged arc welding
Cold shut
Swell
Sand wash
Scab
Material of drill
Type of material to be drilled
Quality of surface finish desired
All of these
Adjusting the current
Adjusting the duration of current
Changing the electrode size
Changing the electrode coating
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
πd
πdn
πdn sinα
πdn cosα
Water
Soluble oil
Dry
Sulphurised mineral oil
Metal removal rate is high
High surface finish is obtained
High form accuracy is obtained
High dimensional accuracy is obtained
Sprue base area: runner area: ingate area
Pouring basin area: ingate area: runner area
Sprue base area: ingate area: casting area
Runner area: ingate area: casting area
The cutting edge of the tool is perpendicular to the direction of tool travel.
The cutting edge clears the width of the workpiece on either ends.
The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge.
All of the above
Improve the accuracy of location
Reduce the tendency to over-index
Improve upon the acceleration and deceleration characteristics
Reduce the cycle time
Tool is stationary and work reciprocates
Work is stationary and tool reciprocates
Tool moves over stationary work
Tool moves over reciprocating work
Making a cone-shaped enlargement of the end of a hole
Smoothing and squaring the surface around a hole
Sizing and finishing a small diameter hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
No relative motion occurs between them
No wear of tool occurs
No power is consumed during metal cutting
No force between tool and work occurs
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
Body centred cubic
Base centred cubic
Hexagonal closed packed
Body centred tetragonal
120
170
180
240
3° to 8°
20° to 30°
60° to 90°
90° to 120°
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
Taper tap
Second tap
Bottoming tap
Any one of these
Shaping
Casting
Forming
Hobbing
Wheel is too hard or wheel revolves at a very high speed
Wheel is too soft or wheel revolves at a very slow speed
Wheel is too hard and wheel revolves at very slow speed
Wheel is too soft and wheel revolves at a very high speed
Grinding
Lapping
Honing
Buffing
Cutting speed
Feed rate
Shear angle
Tool geometry
Internal tapers
Small tapers
Long slender tapers
Steep tapers
0.20
0.30
0.50
0.60
Vertical boring machine
Horizontal boring machine
Precision boring machine
Jig boring machine
Same throughout
In progressively decreasing order
In progressively increasing order
None of these
Cutting key ways on shafts
Cutting external screw threads
Cutting teeth of spur gears
All of these
Regulating wheel diameter
Speed of the regulating wheel
Angle between the axes of grinding and regulating wheels
All of the above