Equal to
Smaller than
Greater than
None of these
B. Smaller than
5°
10°
15°
20°
Doubled
Halved
Quadrupled
Unchanged
Incomplete fusion
Lamellar tearing
Mismatch
Shrinkage void
Wear resistance
Red hardness
Toughness
All of these
Straight fluted reamer
Left hand spiral fluted reamer
Right hand spiral fluted reamer
Any one of these
15 to 19 m/min
25 to 31 m/min
60 to 90 m/min
90 to 120 m/min
Torch brazing
Dip brazing
Resistance brazing
Furnace brazing
Direct indexing
Simple indexing
Compound indexing
Differential indexing
Longitudinally
Crosswise
Vertically
All of these
Work material
Tool material
Working conditions
Type of chip produced
Vertical boring machine
Horizontal boring machine
Precision boring machine
Jig boring machine
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
Of maximum diameter 15 mm
In 15 mm thick plates
Having cross-sectional area of 15 mm²
None of these
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
Reduce built up edge
Break up chips
Improve machinability
All of these
250°C
350°C
500°C
900°C
Drill remover
Drill puller
Drift
Drill drawer
Shaping operation
Forming operation
Surface finishing operation
Dressing operation
Leading edge of the land with a plane having the axis of the drill
Flank and a plane at right angles to the drill axis
Chisel edge and the lip as viewed from the end of a drill
None of the above
πd
πdn
πdn sinα
πdn cosα
0.20
0.30
0.50
0.60
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
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
0° to 8°
9° to 15°
16° to 20°
21° to 25°
10 m/min
15 m/min
22 m/min
30 m/min
ARC welding
Submerged ARC welding
TIG welding
MIG welding
Increases tool life
Decreases tool life
Produces chipping and decreases tool life
Results in excessive stress concentration and greater heat generation
Argon H₂
Argon CO₂
Argon Helium
Helium
Circular Interpolation − clockwise
Circular Interpolation − counter clockwise
Linear Interpolation
Rapid feed
20°
30°
45°
60°