The bearing characteristic number shown in the graph is directly proportional to the unit bearing pressure.
In the graph shown, which regions points the partial metal to metal contact.
Explanatiion: BC is the condition of thin film and hence surfaces are not completely separated.
Hydrodynamic lubrication takes place in region?
Explanation: In CD thick film of lubrication has developed.
Coefficient of friction is minimum at
Explanation: It is minimum at the transition zone.
Bearing modulus is the bearing characteristic number at
Explanation: BCN modulus is the the BCN number corresponding to the minimum coefficient of friction.
If viscosity of the lubricant is very low than BCN will lie in the region
Explanation: Due to low viscosity, lubricant will not separate the two surfaces resulting in partial contact.
The fundamental equation for viscous flow is given by ∆pbhᵌ/6µl where symbols have their usual meanings.
Explanation: It is givenby ∆pbhᵌ/12µl.
A single transverse weld is preferred over double transverse fillet weld.
Explanation: A single transverse weld is not preferred because the edge of the plate which is not welded can warp out of shape.
Transverse fillet weld can be designed using the same equations as of parallel fillet weld.
Explanation: Vice versa is true as strength of transverse fillet weld is greater than that of parallel fillet weld.