Same
Coarser
Finer
Very fine
A. Same
18
16
20
22
Yes
No
Sometimes
Rarely
T₁/T₂ = μθ
log (T₁/T₂) = μθ
T₁/T₂ =eμθ
T₁/T₂ = log μθ
(1/2) × √(σ² + 4τ²)
√(σ² + 4τ²)
(1/2) × [σ + √(σ² + 4τ²)]
σ + √(σ² + 4τ²)
Plastic materials
Brittle materials
Non-ferrous materials
Ductile materials
Acts when external load is applied
Becomes zero when external load is removed
Is independent of external loads
Is always harmful
Metric
Square
Buttress
Acme
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
Shaft B is better than shaft A
Shaft A is better than shaft B
Both the shafts are equally good
None of these
Directly proportional to the polar moment of inertia and to the distance of the point from the axis
Directly proportional to the applied torque and inversely proportional to the polar moment of inertia
Directly proportional to the applied torque and the polar moment of inertia
Inversely proportional to the applied torque and the polar moment of inertia
(Kf + 1)/ (Kt + 1)
(Kf - 1)/ (Kt - 1)
(Kt + 1)/ (Kf + 1)
(Kt - 1)/ (Kf - 1)
Brittle materials
Ductile materials
Elastic materials
Plastic materials
More
Less
Same
More or less depending on quantum of load
0.75/ (0.75 + √v)
3/ (3 + v)
4.5/ (4.5 + v)
6/ (6 + v)
1 : 1
2 : 1
3 : 2
2 : 3
Strong in buckling about X-axis
Strong in buckling about Y-axis
Equally strong in buckling about X-axis and Y-axis
Any one of the above
Thick lubricated bearings
Plastic bearings
Antifriction bearings
Thin lubricated bearings
Less than
Equal to
More than
None of these
Brown colour
Yellow colour
White colour
Grey colour
Ratio of coil diameter to wire diameter
Load required to produce unit deflection
Its capability of storing energy
Its ability to absorb shocks
0.4 times
0.6 times
0.7 times
0.8 times
90
60
120
100
Elastic strength
Yield strength
Shear strength
None of these
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
Effective length of column to least radius of gyration of the column
Width of column to depth of column
Maximum size of column to minimum size of column
Effective length of column to width of column
Increases the fatigue strength
Decreases the fatigue strength
Has no influence on fatigue strength
Alone has no influence on fatigue strength
(π/4) d² × τ × n
1.875 × (π/4) d² × τ × n
2 × (π/4) d² × τ × n
3 × (π/4) d² × τ × n
Normal pitch
Axial pitch
Diametral pitch
Module
Base circle
Pitch circle
Addendum circle
Dedendum circle
Equal to
sinα times more than
sinα times less than
cosecα times more than