Page 781 - Basic Electrical Engineering
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The per-phase armature winding resistance, R  can be measured by the
                                                                          a
               ammeter voltmeter method. From Z  the value of X  can be calculated as
                                                                             s
                                                          s





                  Voltage regulation for a particular load current and power factor can then
               be calculated.



               Example 10.5    A 3 MVA, 6600 V, three-phase, star-connected synchronous
               generator has a resistance of 0.2 Ω and synchronous reactance of 3.5 Ω per
               phase. Calculate the regulation at rated output at 0.8 power factor lagging.

               The speed and excitation remain constant.


               Solution:


















                                                         Figure 10.14


               Given line voltage = 6600 V










               R  = 0.2 Ω
                 a
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