A three-phase generator delivers voltages V A (t) = V 0 cost, V B (t) = V
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A three-phase generator delivers voltages VA(t) = V0 cosωt, VB(t) = V0 cos(ωt + 2π/3), and VC(t) = V0 cos (ωt − 2π/3). First, assume that all three phases are connected to identical, purely resistive loads. Show that the total power delivered is 3V20 /2R, independent of time. Next, assume that the loads have impedance|Z|eiφ, and show that the total power remains time independent. What is the role of the power factor,cos φ?
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For the resistive case the instantaneous power delivered to each load is Pt I 2 tR where ...View the full answer
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