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Control SystemsSteady-State Error

For a Type 1 unity-feedback system, the steady-state error to a unit-step input is?

  • AZero
  • BFinite nonzero
  • CInfinite
  • DEqual to Kv
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Correct Answer: A. Zero
Explanation: A Type 1 system has one integrator, giving infinite Kp and therefore zero steady-state error for a step input.
Reference: Standard control systems: steady-state error
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