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
C. The new belt will carry more than its share and result in short life
Directly proportional to (shaft diameter)²
Inversely proportional to (shaft diameter)²
Directly proportional to (shaft diameter)⁴
Inversely proportional to (shaft diameter)⁴
Pulley is made the weakest
Key is made the weakest
Key is made the strongest
All the three are designed for equal strength
Directly as load
Inversely as square of load
Inversely as cube of load
Inversely as fourth power of load
Elastic strength
Yield strength
Shear strength
None of these
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
W/2
2W/3
W/9
8W/9
Same
Double
One-half
One-fourth
Brinell
Rockwell
Vickers
None of the above
(Kf + 1)/ (Kt + 1)
(Kf - 1)/ (Kt - 1)
(Kt + 1)/ (Kf + 1)
(Kt - 1)/ (Kf - 1)
Needle roller bearings
Tapered roller bearings
Spherical roller bearings
Cylindrical roller bearings
F/bh
3F/2bh
2F/bh
4F/bh
εc + 2εl
2εc + εl
εc + εl²
εc² + εl
In a direction parallel to the cam axis
In a direction perpendicular to the cam axis
In any direction irrespective of cam axis
Along the cam axis
Provide cooling action
Lubricate the dies
Help removes chips
All of the above
2.5
2.8
3.0
3.5
Intersecting and the teeth are curved
Non-intersecting and nonparallel and the teeth are curved
Non-intersecting and non-parallel and the teeth are straight
None of the above
Longitudinal stress
Circumferential stress
Shear stress
None of these
Knuckle threads
Square threads
Acme threads
Buttress threads
First type
Second type
Third type
Any one of these
When the maximum shear stress in a biaxial stress system reaches the shear stress at elastic limit in a simple tension test
When the maximum principal stress in a biaxial stress system reaches the elastic limit of the material in a simple tension test
When the strain energy per unit volume in a biaxial stress system reaches the strain energy at the elastic limit per unit volume as determined from a simple tension test
When the maximum principal strain in a biaxial stress system reaches the strain at the elastic limit as determined from a simple tension test
1-3 m/s
3-15 m/s
15-30 m/s
30-50 m/s
Same time to reach earth
Times proportional to weight to reach earth
Times inversely proportional to weight to reach earth
None of the above
d
1.5 d
2.5 d
2 d
1100 to 1300°C
1300 to 1500°C
500 to 600°C
700 to 900°C
Has a head on one end and a nut fitted to the other
Has head at one end and other end fits into a tapped hole in the other part to be joined
Has both the ends threaded
Has pointed threads
Woodruff key
Feather key
Flat saddle key
Gib head key
Reducing
Increasing
Both A and B
None of these
Axially upwards
Axially downwards
Axially upwards or downwards
None of these
Lighter and easier to handle
Greater shock absorption
Smoother inside walls
All of the above
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