Question No.2: [20 Marks] A feedback control system is represented by the signal flow graph (SFG) shown in Fig. 2. Apply Mason's rule to find the transfer function Ys/Y2 -HA Y₁ ده Y₂ 15 G₁ Y6 54 G₁ Y, -H₁ 5. A -H₁ Fig. 2 Gy -H₂ ولا Ys