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A 3-phase line has an impedance of 2+j4
ohms. The line feeds two balanced 3-phase
loads that are connected in parallel. The first
load is wye-connected and has an
impedance of 30+j40 ohms and the second
is delta connected load and has an
impedance of 60-j45 ohms. The line is
energized at the sending end from a
balanced supply line voltage 207.85. Taking
phase Va as reference determine the line
current la.

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