Here is the question along with the solution. I am mainly concerned about part b).
2. Relevant equations
See image above.
3. The attempt at a solution
So instead, I decided to try to find the answer using the following formula:
Pin = Pi^2 r + PBm + Pout
This results in:
Va(Ia+If) = Ia^2 Ra + If^2 Rf + 0.05Pout + Pout
Solving the above results in Tm = 10.461 which is slightly off compared to the actual solution, does anyone know why?