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Consider a unity feedback control system with open-loop transfer function
G = K s(s + 1)
The steady state error of the system due to a unit step input is
-
- zero
- K
- 1/ K
- ∞
Correct Option: A
Unity feedback control system is shown as below :
Steady state error due to unit step.
Since it is a Type 1 system, hence steady state error of system due to unit step input is zero.
| ∴ ess = | = 0 | |
| 1 + Kp |
