Question

Which of the following is a semi fluid lubricant, used for slow moving parts?

(a) Grease

(b) Crankcase breather

(c) Relief valve

(d) Oil pressure gauge

I had been asked this question in class test.

This interesting question is from Lubrication System in division Lubrication System and Tractor’s Classification of Farm Machinery

Answer 1

Right choice is (a) Grease

Explanation: Grease is a semi fluid lubricant, used for slow moving parts. It is useful for those parts, which are connected and are not easily accessible, such as universal joints, water pumps, wheel and axle bearings. Grease consists of a mixture of mineral oil and metallic soap along with a few other chemicals.