Basic AC Power POWER TRIANGLEPowerinSeriesR-LCircuitFigure 4 Series R-L CircuitExample: A 200 W resistor and a50 W XL are placed in series witha voltage source, and the totalcurrent flow is 2 amps, as shownin Figure 4.Find: 1. pf2. applied voltage, V3. P4. Q5. SSolution:1. pfcosq qarctanXLRcosarctanXLRcosarctan50200cos (14°)pf0.0972. VIZ ZR2X2LI R2X2L22002502242,500(2)(206.16)V412.3 voltsNote: Inverse trigonometric functions such as arctan are discussed in the MathematicsFundamentals Manual, Module 4, Trigonometry, pages 6 and 7 should the student requirereview.Rev. 0 Page 5 ES-09
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business