Question:

A first order system with a proportional controller exhibits an offset to step input. The offset can be reduced by:

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To eliminate steady-state error (offset), add integral action in the controller.
Updated On: June 02, 2025
  • increasing the gain
  • adding integral mode
  • adding derivative mode
  • decreasing the gain
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The Correct Option is B

Solution and Explanation

A proportional controller alone cannot eliminate steady-state error (offset) for a step input. Adding an integral component introduces an accumulating term that forces the error to zero over time, effectively removing the offset.
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