MATLAB AppDesigner1 (Efficiency-VR analysis of a Single-Phase Step-Up Transformer)

Problem 2.18:
A 75-kVA, 240-V:7970-V, 60-Hz single-phase distribution transformer has the following parameters referred to the high-voltage side:
R1 = 5.93 Ohm
R2 = 3.39 Ohm
Rc = 244 kOhm
X1 = 43.2 Ohm
X2 = 40.6 Ohm
Xm = 114 kOhm
Assume that the transformer is supplying its rated kVA at its low-voltage terminals. Write a MATLAB script to determine the efficiency and regulation of the transformer for any specified load power factor (leading or lagging). You may use reasonable engineering approximations to simplify your analysis. Use your MATLAB script to determine the efficiency and regulation for a load power factor of 0.87 leading.