Machine Design
Plastic flow in ductile materials

Has no effect on it
Lessens the seriousness of static loading stress concentration
Depends on other considerations
Increases the seriousness of static loading stress concentration

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Machine Design
The plasticity is the property of a material which enables it to

Regain its original shape after deformation when the external forces are removed
Resist fracture due to high impact loads
Draw into wires by the application of a tensile force
Retain deformation produced under load permanently

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Machine Design
In a hydrodynamic lubricated bearing

The lubricant is forced between the journal and the bearing, by external pressure
There is a thin film of lubricant between the journal and the bearing
There is no lubricant between the journal and the bearing
There is a thick film of lubricant between the journal and the bearing

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