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SOLVED: A three-phase, three-wire, 240 V, ABC system supplies a delta-connected load in which ZAB = 25∠90° Ω, ZBC = 15∠30° Ω, and ZCA = 20∠0° Ω. Find the line currents and the total real and reactive powers. Draw the phasor diagram for the phase and line currents.
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A balanced three-phase inductive load is supplied in steady state by a balanced three-phase voltage source with a phase voltage of 120 V ms. The load draws a total of 10 kW at a power factor of 0.85 (lagging). Calculate the rms value of the phase currents and the magnitude of the per-phase load impedance. Draw a phasor diagram showing all three voltages and currents. | Numerade
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A three-phase transformer supplies a block of flats at 230 V line to neutral. The load is balanced and totals 285 kW at 0.95 p.f. The turns ratio of the transformer primary to secondary is 44: 1 and the primary side of the transformer is connected in mesh. Calculate (a) the primary line voltage, (b) draw a diagram and mark the values of the phase and line currents in both windings. | Numerade
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