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2. A synchronous generator with a synchronous reactance of $X_{S}=2?$ is connected to an infinite bus. The line current of the generator is $I?_{a}=5?30_{?}A$ and the equivalent field (phase) voltage is $E_{f}?=11?0_{?}kV$. a) Draw the per-phase equivalent circuit and label parameters. b) Calculate the terminal (phase) voltage $V?_{t}$ c) Draw the phasor diagram of $V_{t}?,E_{f}?,X_{s}?I?_{a}$ and $I?_{a}$ d) Calculate the active and reactive power delivered to the infinite bus and the power factor e) If the delivered active power is the same as in (d), but the power angle is $?=15_{?}$, calculate the voltage of the infinite bus and the pullover power. f) Based on question (e), if the excitation of the generator is increased by $20%$, calculate the power angle and pullover power.

Given synchronous reactance Xs=2j?Line current is Ia?=5?30?APhase voltage isEf?=11?0?kVa) The per-phase equivalent circuit of the synchronous generato