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Speed response of a drive describes

  • A.the range of speeds over which it can be operated
  • B.the accuracy with which it holds a commanded speed
  • C.the losses it incurs at reduced speed
  • D.how quickly it follows a change of reference

Answer: D

It is governed by the available torque and the inertia, and by the bandwidth of the control loops. A servo drive with a low-inertia machine and a fast current loop can reverse in milliseconds, where a large process drive may take seconds.

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