Same in both cases
2 times more
3 times more
4 times more
C. 3 times more
Very fine threads
High efficiency
Low efficiency
Strong teeth
Loose in shaft and tight in hub
Tight in shaft and loose in hub
Tight in both shaft and hub
Loose in both shaft and hub
Tip of the pinion and flank of gear
Tip of the gear and flank of pinion
Flanks of both gear and pinion
Tip of both gear and pinion
Determining brittleness
Protecting metal against corrosion
Protecting metal against wear and tear
Experimental stress analysis
Angular bevel gears
Mitre gears
Crown Bevel gears
Internal bevel gears
Sleeve bearings
Hydrodynamic bearings
Thin lubricated bearings
None of the above
0.2
0.25
0.50
0.6
Hot piercing
Extrusion
Cold peening
Cold heading
Increasing the initial tension in the belt
Dressing the belt to increase the coefficient of friction
Increasing wrap angle by using idler pulley
All of the above methods
Pt /P
Ps /P
Pc /P
Least of Pt, Ps and Pc/P
Crown bevel gears
Angular bevel gears
Mitre gears
Internal bevel gears
Porosity of the metal is largely eliminated
Grain structure of the metal is refined
Mechanical properties are improved due of refinement of grains
All of the above
1/sinθ
1/cosθ
1/tanθ
sinθ cosθ
0.96
0.97
0.98
0.99
Shear strength is equal to crushing strength
Shear strength is greater than crushing strength
Shear strength is less than crushing strength
None of the above
An axial compressive force
A tangential force
An axial tensile force
Any one of these
White metal
Silicon bronze
Monel metal
Phosphor bronze
Carbon content is 2%
Maximum compressive strength is 200 N/mm²
Minimum tensile strength is 200 N/mm²
Maximum shear strength is 200 N/mm²
Mild steel
Dead mild steel
Medium carbon steel
High carbon steel
ISO metric thread
Acme thread
Square thread
Buttress thread
l/2
l/√2
l
2 l
Foundation purposes
Absorbing shock and vibrations
Transmission of power
Lifting and transportation of machines and cubicles
Both the ends fixed
Both the ends hinged
One end fixed and the other end hinged
One end fixed and the other end free
A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron
A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel
Both will be equally rigid
Which one is rigid will depend on several other factors
Hydrostatic lubricated bearing
Hydrodynamic lubricated bearing
Boundary lubricated bearing
Zero film bearing
Ductile materials
Brittle materials
Equally serious in both cases
Depends on other factors
Lower critical temperature
Upper critical temperature
Recrystallisation temperature
None of these
There is a thick film of lubricant between the journal and the bearing
There is a thin film of lubricant between the journal and the bearing
The lubricant is forced between the journal and the bearing, by external pressure
There is no lubricant between the journal and the bearing
Right hand
Left hand
Both A and B
None of these
Combined effect of transverse shear stress and bending stress in the wire
Combined effect of bending stress and curvature of the wire
Combined effect of transverse shear stress and curvature of wire
Combined effect of torsional shear stress and transverse shear stress in the wire