In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is_____________?

Question

Accepted Answer

G/(1 + H). The output-input relationship in a standard feedback system is typically given by the closed-loop transfer function, which is G/(1 + GH). Since H is often used for the feedback path and G for the forward path, the correct form is usually G/(1 + GH) or similar depending on notation. Option A matches this structure if H represents the feedback gain.