Question

____________ is the property of a lubricating oil due to which the oil retains a thin film between the two surfaces.

(a) Oiliness

(b) Film Strength

(c) Adhesiveness

(d) None of the mentioned

The question was asked in an internship interview.

I need to ask this question from Properties of Lubrication topic in chapter Engine Friction and Lubrication of IC Engine

Answer 1

The correct answer is:

(b) Film Strength

Film strength refers to the ability of the lubricating oil to maintain a thin film between two surfaces, even under high pressure and temperature, preventing direct metal-to-metal contact and reducing wear. This property is crucial for ensuring the effective operation of bearings and other engine components.