Question

What is lubrication?

Answer 1

the substance which is used to run the vehicle smoothly is called lubrication.

Answer 2

The process by which the surface is made smooth to minimize friction and allow smooth movement by applying grease or oil is called lubrication.

There are many regimesof lubrication. They are:-

Hydrostatic lubrication
Elastohydrodynamic lubrication
Boundary lubrication
Mixed lubrication