Question

why is oil or grease applied to the moving parts of a machine​

Answer 1

Answer:

Applying oil to the moving part of machine is to reduce its friction while having movement against each other.

Explanation:

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Answer 2

Answer:

Applying oil to the moving part of machine is to reduce its friction while having movement against each other. EXPLANATION: The continuous movement between two parts which are connected with some joint produces heat energy due to the friction which act against each other.