Question

In boundary lubrication, the coefficient of friction ranges about ______

(a) 0.05-0.1

(b) 0.5-0.15

(c) 0.05-0.15

(d) 1-1.5

This question was addressed to me by my college director while I was bunking the class.

I'm obligated to ask this question of Mechanism of Lubrication topic in section Lubricants of Applied Chemistry

Answer 1

Correct answer is (c) 0.05-0.15

Easy explanation: In boundary lubrication, the thickness of the fluid film must be 1000^oA. The coefficient of friction is about 0.05 to 0.15. This thin film contains the one or two layers. Thus it is called as thin lubrication or boundary lubrication.