A 3 – Ø, 4-wire, symmetrical supply with a phase sequence of abc supplies an unbalanced, Y- connected load of the follow

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A 3 – Ø, 4-wire, symmetrical supply with a phase sequence of abc
supplies an unbalanced, Y- connected load of the following
impedances: Za = 21.4 ∟ 54.3° Ω Zb = 19.7 ∟ -41.6° Ω Zc =20.9 ∟
37.8° Ω An analysis of currents flowing in the direction of the
load in line c shows that the positive and negative phase sequence
currents are 24.6 ∟-42° A and 21.9 ∟ 102° A. The current flowing in
the neutral towards the star point of the supply is 44.8 ∟36° A (a)
Calculate the current in each line [8] (b) Calculate the line
voltage in the system [12]