15. Consider this ideal transformer circuit: i(t) 10 Ω W 5:4 v (t) = 155 cos (5t) V 10 H vo(t) Determine the output voltage, vo(t), the voltage across the 10 H inductor. Vo(t) = 2002

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A: V=200∠0°I=10∠-45°Z=VIZ=20∠45°

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Z parameter

The Z-parameters that are the impedance parameters of a two-port network are defined by expressing the two-port voltages V1 and V2 in terms of two-port currents I1 and I2. The Z-parameters are calculated by open circuiting one of the two ports at a time henceforth they are called open-circuit impedance parameters.