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A 14-pole Y-connected three-phase water-turbine-driven generator is rated at 120 MVA, 13.2 kV, 0.8 PF
lagging, and 60 Hz. Its direct-axis reactance is 0.62 \Omega and its quadrature- axis reactance is 0.40 \Omega . All
rotational losses may be neglected.
(a) What internal generated voltage would be required for this generator to operate at the rated
conditions?
(b) What is the voltage regulation of this generator at the rated conditions?
(c) Sketch the power-versus-torque-angle curve for this generator. At what angle \delta is the power of the generator maximum?
(d) How does the maximum power out of this generator compare to the maximum power available if it were of cylindrical rotor construction?

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