Electronics and Communication Engineering - Exam Questions Papers - Discussion

Use Mesh analysis

z parameters are given by,

V₁ = Z₁₁I₁ + Z₁₂I₂ ...(a)

V₂ = Z₂₁I₁ + Z₂₂I₂ ...(b)

Apply KVL to mesh 1

V₁ = 3I₁ - 2I₃ ...(i)

Apply KVL to mesh 2

V₂ = 2I₂ + 2I₃ ...(ii)

Apply KVL to mesh 3

5I₃ + 2I₂ -2I₁ =0 ...(iii)

5I₃ = 2I₁ - 2I₂

Put I₃ in eq. (i)

...(iv)

Put in (ii)

Similarly, ...(v)

Compare equation (iv) to (a) and equation (v) to (b)

∴

.