Above
Below
At
None of these
B. Below
Equal to
Less than
Greater than
None of these
d
1.25 d
1.5 d
1.75 d
To produce torque
For speed reduction
To obtain variable speeds
To increase efficiency of system
Long column
Short column
Short and long column
Very long column
Butt weld
Fillet weld
Sleeve weld
Socket weld
Euler's formula
Rankine's formula
Johnson's straight line formula
Johnson's parabolic formula
Same time to reach earth
Times proportional to weight to reach earth
Times inversely proportional to weight to reach earth
None of the above
Brittle when cold
Brittle when hot
Brittle under all conditions
Ductile at high temperature
12
14
18
24
The cold rolled shafting is stronger than hot rolled shafting
The hot rolled shafting is stronger than cold rolled shafting
The cold rolled and hot rolled shaftings are equally strong
The shafts are not made by rolling process
Decreasing the cross-section area of bar
Increasing the cross-section area of bar
Remain unaffected with cross-section area
Would depend upon other factors
Butt joint with single cover plate
Butt joint with double cover plate
Lap joint with one ring overlapping the other
Any one of the above
Friction angle is less than helix angle
Friction angle is more than helix angle
Friction angle is equal to helix angle
Efficiency of screw is 100%
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
Crown bevel gears
Angular bevel gears
Mitre gears
Internal bevel gears
Material of the belt
Material of the pulley
Uneven extensions and contractions due to varying tension
All of the above
Same
Higher
Lower
None of these
Compression
Tension
Shear
Combined loads
The pitch of rivets is obtained by equating the tearing resistance of the plate to the shearing resistance of the rivets
The pitch of rivets should not be less than 2d, where d is the diameter of rivet hole
The maximum value of the pitch of rivets for a longitudinal joint of a boiler, as per I.B.R., is given by Pmax = C.t + 41.28 mm
According to I.B.R., the thickness of butt strap shall not be less than 5 mm
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
Half
Twice
Thrice
None of these
Whose upper deviation is zero
Whose lower deviation is zero
Whose lower as well as upper deviations are zero
Does not exist
Free from corrosion
Stronger in tension
Free from stress
Leak-proof
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
Zero film bearing
Boundary lubricated bearing
Hydrodynamic lubricated bearing
Hydrostatic lubricated bearing
Young's modulus
Coefficient of elasticity
Elastic limit
Endurance limit
Heavy thrust load only
Small angular displacement of shafts
Radial load at high speed
Combined thrust and radial loads at high speed
Eutectoid steel
Hypereutectoid steel
Hypo-eutectoid steel
None of these
Short bearing
Long bearing
Medium bearing
Square bearing
Increases markedly
Decreases markedly
Remain same
Depends on heat treatment carried out