Question:-
A unity feedback closed-loop system has a plant G(s)=(1/s2) and a PD controller GC(s) in the forward path If GC(s) = TP(1+TDs) where TP and TD are positive adjustable parameters which one of the following statements is NOT true ?
Option (A)
The system is always stable
Option (B)
The system may have damped oscillation for a unti-step input
Option(C)
The system amplifies the noise
Option(D)
The system has zero steady-state error for a unit-parabolic input
Correct Option:
(D)
question-answer-faq-2027