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

Discussion

Ratio control between two drives is required in

  • A.a single centrifugal pump delivering into a fixed head
  • B.a ventilation fan running continuously in one direction
  • C.a hand tool operated intermittently from a socket outlet
  • D.a paper machine or a rolling mill train

Answer: D

Correct answer: a paper machine or a rolling mill train

Where a continuous web or strip passes through several driven sections, each must run at a set ratio to its neighbours or the material tears or gathers. The ratio changes along the train as the material thins or stretches, so the drives must be coordinated rather than merely set to the same speed.

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

Post your comment

Please log in or register to post a comment.