Material of the belt
Material of the pulley
Uneven extensions and contractions due to varying tension
All of the above
C. Uneven extensions and contractions due to varying tension
Material and geometry of the part
Geometry of the part
Material of the part
None of these
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
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
Bottom side of belt as slack side
Top side of belt as slack side
Idler pulley
None of the above
Axially upwards
Axially downwards
Axially upwards or downwards
None of these
Both the ends fixed
Both the ends hinged
One end fixed and the other end hinged
One end fixed and the other end free
Straining
Fatigue
Creep
Sudden loading
Ratio of coil diameter to wire diameter
Load required to produce unit deflection
Its capability of storing energy
Its ability to absorb shocks
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
Addendum
Dedendum
Clearance
Working depth
Ratio of coil diameter to wire diameter
Load required to produce unit deflection
Its capability of storing energy
Concerned with strength of wire of spring
Bushed pin type coupling
Universal coupling
Oldham coupling
All of these
Woodruff key
Feather key
Flat saddle key
Gib head key
Leather
Rubber
Canvas or cotton duck
Balata gum
1 in 5
1 in 10
1 in 24
1 in 40
Thick film
Thin film
Either A or B
None of these
Gerber relation
Soderberg relation
Goodman relation
None of these
0.124 - (0.684/T)
0.154 - (0.912/T)
0.175 - (0.841/T)
None of these
Woodruff key
Feather key
Flat saddle key
Gib head key
45°
60°
75°
90°
Increase shank diameter
Increase its length
Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread
Tighten die bolt properly
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
Equal to
Twice
Three times
Four times
Same
Double
One-half
One-fourth
Base circle
Pitch circle
Prime circle
Pitch curve
Cold working
Shot peening
Grinding and lapping surface
Hot working
One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
A slot is cut partly is middle of nut and then slot reduced by tightening a screw
A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed 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 spitted and bent in reverse direction at other end
Muff coupling
Compression coupling
Flange coupling
All of these
Elastic limit
Ultimate tensile strength
Young's modulus
Endurance limit
2WD3n/Gd⁴
4WD3n/Gd⁴
8WD3n/Gd⁴
16WD3n/Gd⁴