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A three-phase, wye-connected, 2300-V, four pole, 1000-kVA, 60-Hz synchronous machine has a synchronous reactanceXs = 5, a field resistance Rf = 10, and an approximately linear magnetization characteristic (Ef versus If ) with a slope Kag = 200 . The machine is connected to a balanced three-phase ac system and is used as a generator. Determine the following:
(a) The rated stator current.
(b) The exciter setting Vex = If Rf for operating the machine at rated conditions, at a power factor of (i) 0.866 lagging and (ii) 0.866 leading.
(c) Vex in part (b) for unity power factor and the same real power output as in part (b).
(d) The complex power delivered by the generator to the system for parts (b) and (c).
advantages over other theorams
see figure on this link: http://tinypic.com/r/1zodevk/8. A. j400 I1-j1200 I2 (A) B. -j400 I1+j1600 I2 (A) C. j400 I1+j400 I2 (A) D. -j400 I1-j400 I2 (A)
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