Longitudinal stress
Circumferential stress
Shear stress
None of these
B. Circumferential stress
Rectangular
Elliptical
I-section
Any one of these
Bolts
Keys
Cotters
Rivets
Bending stress
Shear stress
Tensile stress
Bearing stress
0.2
0.25
0.50
0.6
One-fourth
One-third
One-half
Double
Varies linearly
Is uniform throughout
Varies exponentially, being more near the torque-input end
Varies exponentially, being less near the torque-input end
To apply forces
To measure forces
To absorb shocks
To store strain energy
Socket joint
Nipple joint
Union joint
Spigot and socket joint
Angular bevel gears
Mitre gears
Crown Bevel gears
Internal bevel gears
Elastic limit
Strain
Factor of safety
Bulk modulus
Increases the fatigue strength
Decreases the fatigue strength
Has no influence on fatigue strength
Alone has no influence on fatigue strength
Combined effect of transverse shear stress and bending stress in the wire
Combined effect of bending stress and curvature of the wire
Combined effect of transverse shear stress and curvature of wire
Combined effect of torsional shear stress and transverse shear stress in the wire
A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron
A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel
Both will be equally rigid
Which one is rigid will depend on several other factors
One small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
A slot is cut partly in middle of nut and then slot reduced by tightening a screw
Hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed on the bolt causing a tight grip
Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction at other end
Brittle materials
Ductile materials
Plastic materials
Nonferrous materials
Woodruff key
Feather key
Flat saddle key
Hollow saddle key
[(√P1 + √P2)/2]²
P1 + P2
2 × (P1 + P2)
[2 × (P1 + P2)] + Pc Where Pc is centrifugal tension
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
0.75/ (0.75 + √v)
3/ (3 + v)
4.5/ (4.5 + v)
6/ (6 + v)
Addendum
Dedendum
Clearance
Working depth
Direction of twist of wires in strands is opposite to the direction of twist of strands
Direction of twist of wires and strands are same
Wires in two adjacent strands are twisted in opposite direction
Wires are not twisted
p.d.σt
p.t.σt
(p - d) σt
(p - d) t.σt
Normal pitch
Axial pitch
Diametral pitch
Module
Master leaf
Lower leaf
Upper leaf
None of these
More
Less
Same
More or less depending on quantum of load
(6V/ π)1/2
(6V/ π)1/3
(6V/ π)2
(6V/ π)3
Ductile materials
Brittle materials
Equally serious in both cases
Depends on other factors
Brittle materials
Ductile materials
Brittle as well as ductile materials
Elastic materials
Zero film bearing
Boundary lubricated bearing
Hydrodynamic lubricated bearing
Hydrostatic lubricated bearing
10°
20°
30°
45°