Question

explain why machine parts are frequently oiled or greased

Answer 1

This is because the friction between the mechanical components of the engine prevents smooth movements. This causes a lot of energy loss in the form of heat and sound. In other words, friction increases between the mechanical parts. You have already read that greasing, oiling, lubrication etc can decrease friction, thus it is important to get the machine parts frequently greased and oiled.


Hope it helpful

Answer 2

Hey!!!

Machine parts are frequently oiled or greased to reduce friction between its parts.

If friction will be more (high) , more heat will be generated between the parts decreasing the efficiency of the machine.

Thus the machine parts are frequently oiled and greased.

Hope this helps