AC GENERATOR THEORYAC GeneratorsTherefore, the equivalence of these units is expressed with a conversion factor asfollows.550^{ft lbf}sec1hp1 kW737.6^{ft lbf}sec1000 w1 kW746^{W}hpInput Power= 5 hp x 746^{W}hp3730 WOutput Power = 2 kW2000 WEfficiency =^{Output}Input2000 W3730 W0.54 x 10054%SummaryThe important information covered in this chapter is summarized below.AC Generator Theory SummaryThe frequency of the generated voltage in an AC generator can be calculated bymultiplying the number of poles by the speed of the generator and dividing bya factor of 120.The three losses found in an AC generator are:- Internal voltage drops due to the internal resistance and impedance of thegenerator- Hysteresis losses- Mechanical lossesEfficiency of an AC generator can be calculated by dividing the output by theinput and multiplying by 100.ES-10 Page 8 Rev. 0

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