Consider the following statements:
Assertion (A): Hydrostatic lubrication is more advantageous when compared to hydrodynamic lubrication during starting and stopping the journal in its bearing
Reason (R): In hydrodynamic lubrication, the fluid film pressure is generated by the rotation of the journal
Option (A)
Both A and R are individually true and R is the correct explanation of A
Option (B)
Both A and R are individually true but R is not the correct explanation A
A is true but R is false
A is false but R is true
Correct Option:
Question Solution:
Assertion is true because in hydrostatic bearing the staring friction and stopping friction is minimized so less wear and tear of parts. Initial pressure is created from external source pump.
The fluid pressure is generated by rotation of journal in case of hydrodynamic bearing.