A balanced, three-phase circuit is characterized as follows: Y-Δ connected; Source voltage in the b-phase is 150 135 ∘  V; Source phase sequence is acb; Line impedance is 2+j3  Ω/ϕ; Load impedance is 129+j171  Ω/ϕ. 1. a) Draw the single phase equivalent for the a-phase. 2. b) Calculate the a-phase line current. 3. c) Calculate the a-phase line voltage for the three-phase load.

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