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
B. The angle between the tangent to the pitch helix and the plane of rotation
40
50
70
100
0.20
0.35
0.50
0.65
Bushed pin type coupling
Universal coupling
Oldham coupling
All of these
Low carbon steel
High carbon steel
Medium carbon steel
High speed steel
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
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
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
Surface
Just below the surface
Within the core
None of the above
d/2
d/3
3d/4
d/4
Brittle materials
Ductile materials
Plastic materials
Nonferrous materials
More
Less
Same
None of these
F + P
F P
P
F
Mild steel
Dead mild steel
Medium carbon steel
High carbon steel
Square
Acme
Buttress
BSW
Equating tearing resistance of the plate to the shearing resistance of the rivets
Equating tearing resistance of the plate to the crushing resistance of the rivets
Equating shearing resistance to the crushing resistance of the rivets
None of the above
Bottom side of belt as slack side
Top side of belt as slack side
Idler pulley
None of the above
Long column
Short column
Strut
All of these
Reducing
Increasing
Both A and B
None of these
Plastic materials
Brittle materials
Non-ferrous materials
Ductile materials
340 to 360
420 to 450
More than 400
300 to 320
Whose upper deviation is zero
Whose lower deviation is zero
Whose lower as well as upper deviations are zero
Does not exist
Acts when external load is applied
Becomes zero when external load is removed
Is independent of external loads
Is always harmful
Increasing its shank diameter
Increasing its length
Decreasing its shank diameter
Decreasing its length
T₁ - T₂ + Tc
T₁ + T₂ + Tc
(T₁ - T₂ + Tc)/2
(T₁ + T₂ + Tc)/2
K
K/2
2K
K/4
1 in 5
1 in 10
1 in 24
1 in 40
Torque in each shaft is the same
Shear stress in each shaft is the same
Angle of twist of each shaft is the same
Torsional stiffness of each shaft is the same
20 to 30%
10 to 20%
30 to 40%
40 to 50%
Increases the seriousness of static loading stress concentration
Lessens the seriousness of static loading stress concentration
Has no effect on it
Depends on other considerations
Thick film
Thin film
Either A or B
None of these