1-3 m/s
3-15 m/s
15-30 m/s
30-50 m/s
B. 3-15 m/s
Bolted joint
Knuckle joint
Cotter joint
Universal joint
Both sides of the actual size
One side of the actual size
One side of the nominal size
Both sides of the nominal size
Axially upwards
Axially downwards
Axially upwards or downwards
None of these
Bottom side only
Top side only
On both sides
Any side
Decreases the power transmitted
Increases the power transmitted
Increase the wrap angle
Increases the belt tension without increasing power transmission
Woodruff key
Feather key
Gib-head key
Tangent key
Both the ends fixed
Both the ends hinged
One end fixed and the other end hinged
One end fixed and the other end free
5 N-m
7 N-m
10 N-m
15 N-m
90
60
120
100
Increases linearly
Decreases linearly
Remains same
Increases exponentially
Same
Coarser
Finer
Very fine
Flaring
Brazing
Soft soldering
Fusion welding
d
1.25 d
1.5 d
1.75 d
Surface of the top of the tooth
Surface of the tooth above the pitch surface
Width of the tooth measured along the pitch circle
Surface of the tooth below the pitch surface
Directly proportional to (shaft diameter)²
Inversely proportional to (shaft diameter)²
Directly proportional to (shaft diameter)⁴
Inversely proportional to (shaft diameter)⁴
Longitudinal stress
Circumferential stress
Shear stress
None of these
Pulley is made the weakest
Key is made the weakest
Key is made the strongest
All the three are designed for equal strength
Static load
Dynamic load
Impact load
Completely reversed load
Spindles of bench vices
Railway carriage couplings
Feed mechanism of machine tools
Screw cutting lathes
Intersecting and the teeth are curved
Non-intersecting and nonparallel and the teeth are curved
Non-intersecting and non-parallel and the teeth are straight
None of the above
Thick film
Thin film
Either A or B
None of these
8
6
4
10
Belts are available in sets
Only one belt cannot be fitted with other used belts
The new belt will carry more than its share and result in short life
New and old belts will cause vibrations
External load applied
Initial tension due to tightening of the bolt
Relative elastic yielding of the bolt and the connected members
All of the above
Surface of the top of the tooth
Surface of the tooth above the pitch surface
Surface of the tooth below the pitch surface
Width of the tooth measured along the pitch circle
l/2
l/√2
l
2 l
Ductile materials
Brittle materials
Elastic materials
All of the above
Half the angle between two inclined faces in axial plane
The angle between the tangent to the pitch helix and the plane of rotation
The angle between the tangent to the pitch helix and an element of the cylinder
None of the above
Equal to
Less than
Greater than
None of these
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater