Course grained
Medium grained
Fine grained
None of these
A. Course grained
10 r.p.m.
20 r.p.m.
120 r.p.m.
180 r.p.m.
Shearing
Extrusion
Shearing and extrusion
Shearing and compression
Produce tapers
Grind shoulders and formed surfaces
Grind long, slender shafts or bars
All of these
90°
118°
135°
150°
Cast iron
Mild steel
Brass
Aluminium
Between two successive regrinds of the wheel
Taken for the wheel to be balanced
Taken between two successive wheel dressings
Taken for a wear of 1 mm on its diameter
Argon H₂
Argon CO₂
Argon Helium
Helium
Increase in coefficient of friction
Decrease in coefficient of friction
Decrease in roll radius
Decrease in roll velocity
Reduces tool life
Increases tool life
Have no effect on tool life
Spoils the work piece
Pull broaching
Push broaching
Surface broaching
Continuous broaching
Regulating wheel diameter
Speed of the regulating wheel
Angle between the axes of grinding and regulating wheels
All of the above
Four jaw independent chuck
Collect chuck
Three jaw universal chuck
Magnetic chuck
Equal to
Less than
More than
None of these
0
2.07
20.7
41.4
Cold shut
Swell
Sand wash
Scab
Decreases with increase in gap between the two joining surfaces
Increases with increase in gap between the two joining surfaces
Decreases up to certain gap between the two joining surfaces beyond which it increases
Increases up to certain gap between the two joining surfaces beyond which it decreases
Amount of material to be removed
Hardness of material being ground
Finish desired
All of these
Shaping
Casting
Forming
Hobbing
Polymeric mould has been cured
Mould has been totally dried
Mould is green in colour
Mould contains moisture
Arithmetical progression
Geometrical progression
Harmonical progression
Any one of these
High speed steel
Carbon steel
Stainless steel
Either (A) or (B)
Has no effect on
Increase
Decrease
None of these
Increase machining accuracy
Facilitate interchangeability
Decrease expenditure on quality control
All of these
At recrystallization temperature
Between 100⁰C to 150⁰C
Between recrystallization temperature
Above recrystallization temperature
Tool geometry
Cutting speed
Feed rate
All of these
Body centred cubic
Base centred cubic
Hexagonal closed packed
Body centred tetragonal
Brittle metals
Ductile metals
Hard metals
Soft metals
Roughing teeth
Semi-finishing teeth
Finishing teeth
All of these
The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
The heel is that part of the tool which is shaped to produce the cutting edges and face
The base is that surface of the shank which bears against the support and takes tangent pressure of the cut
Drill a hole
Finish the drilled hole
Correct the hole
Enlarge the existing hole