The self and mutual inductances of a transformer can be calculated from measurements of the steady-state ac voltages and currents with the secondary winding open-circuited and short-circuited. Suppose the measurements are jV1j ¼ 120 V, jI1j ¼ 120 mA, and jV2j ¼ 240V when the secondary is open. When the secondary is shorted, the measurements are jI1j ¼ 10A and jI2j ¼ 2:2 A. All measurements were made at f ¼ 400 Hz. Find L1, L2, and M.