Question

Give a reason why oiling or greasing is done on the exposed moving iron parts of machinery and not preferred on heavy stationary iron parts.

Answer 1

$\underline{\underline{\Huge\mathfrak{Answer}}}$

When oiling and greasing is done on the surface of iron parts, moisture does not stick to it. In the absence of water, iron does not get rusted. Thus, surface of iron parts remain protected.

Here, oil and grease doesn't dissolve in water. So that moisture does not stick to it.

Therefore, We should oiling and greasing on the surface of iron parts.

Answer 2

Answer:-Moving parts of a machinery requires lubrication which is provided by the oil or grease.The exposed part need to be prevented from time to time from corrosion which is provided by anti-corrosive paint.