Discussion
Consider the following statements about speed control.
1. Speed range is the ratio of highest to lowest usable speed.
2. Speed regulation is the droop from no load to full load.
3. The two are the same quantity.
Which are correct?
Answer: B
The first two are the standard definitions and describe quite different things: how far the speed can be taken, and how well it stays where it is put. Confusing them leads to specifying a drive that meets one requirement and fails the other.
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