Question

The hydrodynamic friction is associated with the phenomena when a complete film of lubricant exists between the two bearing surfaces.

(a) True

(b) False

I had been asked this question by my college professor while I was bunking the class.

My question is based upon Mechanical Friction in chapter Engine Friction and Lubrication of IC Engine

Answer 1

The correct answer is:

(a) True

Hydrodynamic friction occurs when a complete film of lubricant exists between two bearing surfaces, creating a separation that prevents direct metal-to-metal contact. This film reduces friction significantly and enables smooth movement, as the load is carried by the pressurized lubricant layer.