1 : 1
2 : 1
3 : 2
2 : 3
C. 3 : 2
Module
Tooth profile
Both module and pitch line velocity
Pitch line velocity
A parallel sunk key is a taperless key
A parallel sunk key may be rectangular or square in cross-section
A flat saddle key is a taper key which fits in a key way of the hub and is flat on the shaft
All of the above
Load lifted to the effort applied
Mechanical advantage to the velocity ratio
Load arm to the effort arm
Effort arm to the load arm
Lighter and easier to handle
Greater shock absorption
Smoother inside walls
All of the above
Both the ends fixed
Both the ends hinged
One end fixed and the other end hinged
One end fixed and the other end free
45 to 60 %
63 to 70 %
70 to 83 %
80 to 90 %
120°
180°
270°
360°
Base circle
Pitch circle
Addendum circle
Dedendum circle
Woodruff key
Feather key
Gib-head key
Tangent key
Ductile material
Brittle material
Elastic material
Hard material
Pitch diameter
Inside diameter
Outside diameter
Height
Longitudinal stress
Shear stress
Circumferential stress
None of these
40°
45°
38°
60°
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
Is provided with pointed threads
Acts when external load is applied
Becomes zero when external load is removed
Is independent of external loads
Is always harmful
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
Over head shaft
Counter shaft
Line shaft
All of these
Shoe brake
Band and block brake
Band brake
Internal expanding brake
0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
0.75 t for both the straps on the inside and outside
0.625 t for both the straps on the inside and outside
Cotter joint
Bolted joint
Knuckle joint
Universal coupling
Bottom side of belt as slack side
Top side of belt as slack side
Idler pulley
None of the above
Have contact at the bottom most of the bearing
Move towards right of the bearing making no metal to metal contact
Move towards right of the bearing making the metal to metal contact
Move towards left of the bearing making metal to metal contact
Same
Double
One-half
One-fourth
Remains constant at all speeds
Is minimum at zero speed and increases monotonically with increase in speed
Is maximum at zero speed and decreases monotonically with increase in speed
Becomes minimum at an optimum speed and then increases with further increase in speed
Bottom of groove of the pulley
Sides and bottom of groove of the pulley
Anywhere in the groove of the pulley
Sides of groove of the pulley
p.d.σt
p.t.σt
(p - d) σt
(p - d) t.σt
Axially upwards
Axially downwards
Axially upwards or downwards
None of these
Same
Higher
Lower
Depends on other factors
1 : 1
2 : 1
3 : 2
2 : 3
They are cheap
They can work at high temperature
They are unaffected by moisture and humidity
None of the above