90°
118°
135°
150°
A. 90°
Spot facing
Boring
Tapping
Drilling
Single riveted
Double riveted
Both (A) and (B)
None of these
Hardenability of low carbon steels
Machinability of low carbon steels
Hardenability of high carbon steels
Machinability of high carbon steels
By a form tool
By setting over the tail stock
By a taper turning attachment
By swivelling the compound rest
Cemented carbide
Ceramic
Cast iron
All of these
Metal removal rate is high
High surface finish is obtained
High form accuracy is obtained
High dimensional accuracy is obtained
Watch maker's lathe
Sliding head stock automatic lathe
Multi-spindle automatic lathe
Capstan lathe
Distortion
Warping
Porous weld
Poor fusion
Coarse grained grinding wheel is used
Fine grained grinding wheel is used
Medium grained grinding wheel is used
Any one of these
Pull broaching
Push broaching
Surface broaching
Continuous broaching
Help in the movement of the sparks
Control the spark discharges
Act as coolant
All of these
Internal and external surfaces
Round or irregular shaped holes
External flat and contoured surfaces
All of these
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
350°C
500°C
900°C
1100°C
GTAW
Open air cut voltage
Kerf
Gouging
It improves tool life
It improves the surface finish
Both (A) and (B)
None of these
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
Reduces tool life
Increases tool life
Have no effect on tool life
Spoils the work piece
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
5 to 10 m/min
10 to 20 m/min
20 to 30 m/min
40 to 60 m/min
High speed steel
Carbon steel
Stainless steel
Either (A) or (B)
L-type slots
T-type slots
I-type slots
Any one of these
Water
Soluble oil
Dry
Heavy oils
5 to 15 m/min
15 to 60 m/min
60 to 90 m/min
90 to 120 m/min
In-feed grinding
Through feed grinding
End feed grinding
Any one of these
Continuous chips
Discontinuous chips
Continuous chips with built-up edge
None of these
Face
Fillet
Gash
Land
90°
118°
135°
150°
3000 welds / min, 75 mm / min
600 welds / min, 1500 mm / min
500 welds/ min, 1250 mm/min
22 welds / min, 55 mm / min
0° to 8°
9° to 15°
16° to 20°
21° to 25°