Multiple choice

The input-output transfer function of a plant H(x) = $\dfrac{100}{s(s+10)^2}$. The plant is placed in a unity negative feedback configuration as shown in the figure below.

The signal flow graph that DOES NOT model the plant transfer function H(s) is

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

$$ TF = H(s) \\ = \dfrac{100}{s(s^2+100)} \ne \dfrac{100}{s(s+10)^2} $$