(1/2) × √(σ² + 4τ²)
√(σ² + 4τ²)
(1/2) × [σ + √(σ² + 4τ²)]
σ + √(σ² + 4τ²)
A. (1/2) × √(σ² + 4τ²)
0.20
0.35
0.50
0.65
10 times
5 times
15 times
20 times
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
ZN/p
p/ZN
Z/pN
N/Zp
0.01 micron
0.1 micron
1 micron
10 microns
Whose upper deviation is zero
Whose lower deviation is zero
Whose lower as well as upper deviations are zero
Does not exist
Hexagonal nut
Slotted nut
Castle nut
Any one of the above
Decreases the power transmitted
Increases the power transmitted
Increase the wrap angle
Increases the belt tension without increasing power transmission
12
14
18
24
Maximum at the outer surface and minimum at the inner surface
Maximum at the inner surface and minimum at the outer surface
Maximum at the inner surface and zero at the outer surface
Maximum at the outer surface and zero at the inner surface
Same
Double
One-half
One-fourth
Same
Higher
Lower
Depends on other factors
Material of belt
Material of pulley
Materials of belt and pulley
Belt velocity
Loose in shaft and tight in hub
Tight in shaft and loose in hub
Tight in both shaft and hub
Loose in both shaft and hub
Brittle materials
Ductile materials
Plastic materials
Nonferrous materials
Half
Twice
Thrice
None of these
Welding
Pre-casting
Riveting
Casting
Bending moment only
Twisting moment only
Combined bending moment and twisting moments
Combined action of bending moment, twisting moment and axial thrust
Brittle materials
Ductile materials
Elastic materials
Plastic materials
Flaring
Brazing
Soft soldering
Fusion welding
Socket joint
Nipple joint
Union joint
Spigot and socket joint
Woodruff key
Feather key
Flat saddle key
Gib head key
Carbon content is 2%
Maximum compressive strength is 200 N/mm²
Minimum tensile strength is 200 N/mm²
Maximum shear strength is 200 N/mm²
Straining
Fatigue
Creep
Sudden loading
Low efficiency
High efficiency
Very fine threads
Strong teeth
0.4 times
0.6 times
0.7 times
0.8 times
120°
180°
270°
360°
5°
8°
15°
25°
Joint may not open up
Bolts are weakest elements
The resultant load on the bolt would not be affected by the external cyclic load
Bolts will not loosen during service
The connecting rod will be equally strong in buckling about X-axis and Y-axis, if Ixx = 4 Iyy
If Ixx > 4 Iyy, the buckling will occur about Y-axis
If Ixx < 4 Iyy, the buckling will occur about X-axis
The most suitable section for the connecting rod is T-section