White metal
Silicon bronze
Monel metal
Phosphor bronze
A. White metal
Addendum circle
Dedendum circle
Pitch circle
Clearance circle
30°
45°
60°
80°
Ductile materials
Brittle materials
Elastic materials
All of the above
Maximum stress to the endurance limit
Nominal stress to the endurance limit
Maximum stress to the nominal stress
Nominal stress to the maximum stress
(Sum of base circle radii)/cosφ
(Difference of base circle radii)/cosφ
(Sum of pitch circle radii)/cosφ
(Difference of pitch circle radii)/cosφ
Spindles of bench vices
Railway carriage couplings
Feed mechanism of machine tools
Screw cutting lathes
Same
Double
One-half
One-fourth
Shafts are arranged at right angles and rotate in one definite direction
Shafts are arranged parallel and rotate in the opposite directions
Shafts are arranged parallel and rotate in the same directions
Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft
Material of belt and pulley
Slip of belt
Speed of belt
All of these
l/2
l/√2
l
2 l
10 m/s
12.5 m/s
15 m/s
20 m/s
Knuckle joint
Cotter joint
Oldham coupling
Universal joint
Tempering
Normalising
Annealing
Spheroidising
Tip of the pinion and flank of gear
Tip of the gear and flank of pinion
Flanks of both gear and pinion
Tip of both gear and pinion
Same
Higher
Lower
Depends on other factors
Bending stress only
A combination of torsional shear stress and bending
Direct shear stress only
A combination of bending stress and direct shear stress
Flaring
Brazing
Soft soldering
Fusion welding
Reduce vibration
Reduce slip
Ensure uniform loading
Ensure proper alignment
Yes
No
Sometimes
Rarely
Long column
Short column
Strut
All of these
Length of arc of recess to the circular pitch
Length of path of contact to the circular pitch
Length of arc of contact to the circular pitch
Length of arc of approach to the circular pitch
Prevent the belt from running off the pulley
Increase the power transmission capacity
Increase the belt velocity
Prevent the belt joint from damaging the belt surface
18% nickel and 8% chromium
18% chromium and 8% nickel
18% nickel and 8% vanadium
18% vanadium and 8% nickel
Axial load only
Both radial and axial loads and the ratio of these being greater than unity
Radial load only
Both radial and axial loads and the ratio of these being less than unity
14 ½° composite and full depth involute system
20° full depth involute system
20° stub system
None of the above
Low
High
Medium
None of these
Has a head on one end and a nut fitted to the other
Has head at one end and other end fits into a tapped hole in the other part to be joined
Has both the ends threaded
Has pointed threads
Power transmitted increases
Power transmitted decreases
Power transmitted increases to a maximum value and then decreases
Power transmitted remains the same
There is a thick film of lubricant between the journal and the bearing
There is a thin film of lubricant between the journal and the bearing
The lubricant is forced between the journal and the bearing, by external pressure
There is no lubricant between the journal and the bearing
V-belt drive
Rope drive
Crossed flat belt drive
Chain drive