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Control SystemsSteady-State Error

For G(s)=10/(s+2) with unity feedback, the steady-state error to a unit-step input is?

  • A1/5
  • B1/6
  • C1/10
  • D0
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Correct Answer: B. 1/6
Explanation: Kp=5, so ess=1/(1+Kp)=1/6.
Reference: Standard control systems: steady-state error
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