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

Discussion

The speed of a drive in open loop falls as the load is applied because

  • A.the machine's characteristic droops with torque
  • B.the converter reduces its output frequency automatically
  • C.the moment of inertia of the load increases with load
  • D.the supply voltage falls as the current drawn increases

Answer: A

An induction machine slips further and a dc machine drops more voltage across its armature resistance, both of which reduce the speed. Feedback or slip compensation removes the droop by raising the reference as the load grows.

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

Post your comment

Please log in or register to post a comment.