Are lighter in weight
Offer silent operation
Can withstand shock loads
All of these
D. All of these
0.124 - (0.684/T)
0.154 - (0.912/T)
0.175 - (0.841/T)
None of these
1 in 16
1 in 32
1 in 48
1 in 100
1.2 d
1.6 d
2d
2.5 d
Directly as load
Inversely as square of load
Inversely as cube of load
Inversely as fourth power of load
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
d
1.5 d
2.5 d
2 d
Increasing the length of bar
Decreasing the cross-sectional area of the bar
Decreasing the modulus of elasticity of the bar
All of the above
Nickel
Chromium
Nickel and chromium
Cobalt and molybdenum
d + 17 mm
2d + 13 mm
2d + 20 mm
3.5d
Constant period
Fixed period
Dwell period
Idle period
2.5
2.8
3.0
3.5
1 kN-m
2 kN-m
3 kN-m
4 kN-m
Regains its original shape after deformation when the external forces are removed
Draw into wires by the application of a tensile force
Resists fracture due to high impact loads
Retain deformation produced under load permanently
The oil film pressure is generated only by the rotation of the journal
The oil film is maintained by supplying oil under pressure
Do not require external supply of lubricant
Grease is used for lubrication
0.70
0.25
0.40
0.55
18% nickel and 8% chromium
18% chromium and 8% nickel
18% nickel and 8% vanadium
18% vanadium and 8% nickel
Decreases the power transmitted
Increases the power transmitted
Increase the wrap angle
Increases the belt tension without increasing power transmission
Angular bevel gears
Mitre gears
Crown Bevel gears
Internal bevel gears
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
2000 N-m
2050 N-m
2100 N-m
2136 N-m
Eutectoid steel
Hypereutectoid steel
Hypo-eutectoid steel
None of these
120°
180°
270°
360°
4430 mm as diameter of small pulley
4430 mm as nominal pitch length
4430 mm as diameter of large pulley
4430 mm as centre distance between pulleys
Repeated stress
Yield stress
Fluctuating stress
Alternating stress
Prevent the rotation of load being lifted
Enhance the load carrying capacity of the jack
Reduce the effort needed for lifting the working load
Reduce the value of frictional torque
Remains constant at all speeds
Is minimum at zero speed and increases monotonically with increase in speed
Is maximum at zero speed and decreases monotonically with increase in speed
Becomes minimum at an optimum speed and then increases with further increase in speed
On both the sides
On one side only
On none of the sides
May be provided anywhere
Basic size is 100 mm
Actual size is 100 mm
Difference between the actual size and basic size is 100 mm
None of the above
Brinell
Rockwell
Vickers
None of the above
External load applied
Initial tension due to tightening of the bolt
Relative elastic yielding of the bolt and the connected members
All of the above