Question: A balanced three-phase source supplies power to three wye-connected loads, as depicted in the single-phase diagram of Figure 4.34. LL_load The loads are Load,

A balanced three-phase source supplies power to three wye-connected loads, as depicted

A balanced three-phase source supplies power to three wye-connected loads, as depicted in the single-phase diagram of Figure 4.34. LL_load The loads are Load, Load 1: Load 2: Load 3: Load, S = 38 KVA S = 30 KVA Unknown Load3 Fig 4.34 pf = 0.7 lagging pf2= 0.75 leading The line voltage at the loads and the line current at the source are 240 V and 150 A, respectively. If the combined power factor at the loads is unity, determine: (a) the real, apparent, and reactive powers of the unknown load; and (b) the pf of the unknown load. (c) Vary the resistive component of Load 3 from 0 to 10 Q2, and determine the resistance that corresponds to a power factor of 0.96.

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