ARC
Short ARC
ARC length
ARC blow
B. Short ARC
Zero helix angle is used
Low helix angle is used
High helix angle is used
Any helix angle can be used
High thermal conductivity of titanium
Chemical reaction between tool and work
Low tool-chip contact area
None of these
3 to 12 mm
5 to 20 mm
8 to 30 mm
15 to 40 mm
Improves
Deteriorates
Does not effect
None of these
120
170
180
240
Brittle metals
Ductile metals
Hard metals
Soft metals
Very high pouring temperature of the metal
Insufficient fluidity of the molten metal
Absorption of gases by the liquid metal
Improper alignment of the mould flasks
Hard and brittle materials
Soft and ductile materials
Hard and ductile materials
Soft and brittle materials
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
Fusion
Reverse polarity
Forward welding
Direct polarity
Wear resistance
Red hardness
Toughness
All of these
Single start
Double start
Multi-start
Any one of these
Hardness of abrasive grains
Ability of the bond to retain abrasives
Hardness of the bond
Ability of the grinding wheel to penetrate the work piece
Plastic deformation of metal
Burnishing friction
Friction between the moving chip and the tool face
None of the above
Cylindrical grinder
Internal grinder
Surface grinder
Tool and cutter grinder
In-feed grinding
Through feed grinding
End-feed grinding
Any one of these
Depth of cut
Cutting speed
Feed
All of these
Geometric progression
Arithmetic progression
Harmonic progression
None of these
Decreasing the rake angle
Increasing the depth of cut
Decreasing the cutting speed
Increasing the cutting speed
The chip thickness increase gradually
It enables the cutter to dig in and start the cut
The specific power consumption is reduced
Better surface finish can be obtained
Increases tool life
Decreases tool life
Produces chipping and decreases tool life
Results in excessive stress concentration and greater heat generation
Toughness
Ductility
Elasticity
Work hardening
Universal milling machine
Plain milling machine
Universal milling machine
Hand milling machine
Four jaw independent chuck
Three jaw universal chuck
Magnetic chuck
Drill chuck
Ceramic
Stellite
Diamond
Cemented carbide
In-feed grinding
Through feed grinding
End feed grinding
Any one of these
0.005 to 0.01 mm
0.01 to 0.1 mm
0.05 to 0.1 mm
0.5 to 1 mm
Hardness of the material being ground
Speed of wheel and work
Condition of grinding machine
All of these
Induction motor
DC servo motor
Stepper motor
Linear servo motor
Sensitive drilling machine
Radial drilling machine
Gang drilling machine
Deep hole drilling machine