2. Two balanced 30 loads are connected in parallel across a balanced, 36 positive phase sequence source. The two loads, 1 and 2 respectively connected in wye and delta respectively have impedances of (3+ j0) ohms and (0+ j4) ohms respectively. If the voltage in line a to the neutral of load 1 is 120cis40°, find (a) the line currents of each load; and (b) the total line currents.

A balanced A-connected load consisting of a pure resistances of 152 per phase is in parallel with a purely resistive balanced Y-connected load of 6 2 per phase as shown in the figure. The combination is connected to a three-phase balanced supply of 346.41-V rms (line-to-line ) via a three-phase line having an inductive reactance of j3 Q per phase Taking the phase voltage Van as reference , determine (a) The current, real power, and reactive power drawn from the supply. (b) The line-to-neutral and the line-to-line voltage of phase a at the combined load terminals. j3 N ao |VL| = 346.41 V 15Ω bo Co

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Three balanced three-phase loads are connected in parallel. Load 1 has a Y connection and an impedance of 400 + j300 Ω per phase, Load 2 has a delta connection with an impedance of 2400 - j1800 Ω per phase and Load 3 is 172.8 + j2203. 2 KVA. The three loads are supplied by a distribution line with an impedance of 2 + j 16 Ω per phase. The magnitude of the neutral line voltage at the end of the line corresponding to the load is 24√3 kV. Calculate the total complex power at the end of the line corresponding to the generator. What percentage of the average power at the end of the line corresponding to the generator is being delivered to the loads?