Machine-translated by Google. Questions are authored in English.
Top

Discussion

Oiliness is the property that matters in boundary lubrication because it describes the oil's

  • A.capacity to carry away heat from the bearing
  • B.ability to adsorb and cling to the metal surface
  • C.resistance to being sheared in a thick film
  • D.tendency to oxidise at high temperature

Answer: B

Vegetable and animal oils have long polar molecules that anchor to the metal, which is why a little is blended into a mineral oil for such duty. A high viscosity is no substitute when the film has already been squeezed out.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.