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

Discussion

Equalizer rings are fitted to a lap-wound machine to

  • A.prevent circulating currents between parallel paths
  • B.improve the commutation of the armature current
  • C.increase the emf generated by the machine
  • D.reduce the flux required from each pole

Answer: A

Small differences in the flux under each pole give the paths slightly different emfs, and without a low-resistance connection between corresponding points the difference drives current through the brushes. A wave winding needs no such arrangement.

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

Post your comment

Please log in or register to post a comment.