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

Discussion

Comparing graphite with molybdenum disulphide as a solid lubricant, molybdenum disulphide

  • A.conducts electricity better
  • B.costs appreciably less per kilogram
  • C.has a higher coefficient of friction in air
  • D.works without adsorbed moisture

Answer: D

Its layers shear low unaided, so it serves in vacuum and in dry gases where graphite fails. Graphite is cheaper and a better electrical conductor, which is why it is retained for brushes and for ordinary atmospheric duty.

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

Post your comment

Please log in or register to post a comment.