4F/ πd²
6F/ πd²
8F/ πd²
16F/ 3πd²
D. 16F/ 3πd²
Guest's theory
Rankine's theory
St Venant's theory
Von Mises theory
0.75/ (0.75 + √v)
3/ (3 + v)
4.5/ (4.5 + v)
6/ (6 + v)
Elastic strength
Yield strength
Shear strength
None of these
Uniform velocity
Simple harmonic motion
Uniform acceleration and retardation
Cycloidal motion
Lame's equation
Birnie's equation
Clavarinos' equation
All of these
10 to 20 %
20 to 30 %
30 to 40 %
40 to 50 %
Leather
Rubber
Cotton duck
Balata gum
12
14
18
24
Addendum circle
Dedendum circle
Pitch circle
Clearance circle
Woodruff key
Feather key
Flat saddle key
Gib head key
One-fourth
One-third
One-half
Double
Bending stress only
A combination of torsional shear stress and bending
Direct shear stress only
A combination of bending stress and direct shear stress
½
1
2
4
Spigot and socket cotter joint
Sleeve and cotter joint
Gib and cotter joint
Any one of these
Low carbon steel
High carbon steel
Medium carbon steel
High speed steel
10°-20°
30°-40°
40°-60°
60°-80°
6 m
5 m
7 m
All of these
(1 - sinφ)/ (1 + sinφ)
(1 + sinφ)/ (1 - sinφ)
(1 - sinφ)/ (1 + cosφ)
(1 + cosφ)/ (1 - sinφ)
Gerber relation
Soderberg relation
Goodman relation
None of these
Sleeve bearings
Hydrodynamic bearings
Thin lubricated bearings
None of the above
120°
180°
270°
360°
Metric threads of 33 numbers in 2 cm
Metric threads with cross-section of 33 mm
Metric threads of 33 mm outside diameter and 2 mm pitch
Bolt of 33 mm nominal diameter having 2 threads per cm
Free from corrosion
Stronger in tension
Free from stress
Leak-proof
V-belt drive
Rope drive
Crossed flat belt drive
Chain drive
Brittle materials
Ductile materials
Elastic materials
Plastic materials
29°
55°
47.3°
60°
Heavy load
Loose belt
Driving pulley too small
All of the above
Varies linearly
Is uniform throughout
Varies exponentially, being more at the torque-input end
Varies exponentially, being less at the torque-input end
Lighter and easier to handle
Greater shock absorption
Smoother inside walls
All of the above
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