engineering recuitment GATE EE 2023-24 Test Series Electrical Machines Transformer Three Phase Transformer Connections
Three single-phase, 50-kVA 2400 : 240-V transformers, each identical are connected Y- Δ in a three-phase 150-kVA bank to step down the voltage at the load end of a feeder whose impedance is 0.15 + j1.00 Ω /phase. The voltage at the sending end of the feeder is 4160 V line-to-line. On their secondary sides, the transformers supply a balanced three-phase load through a feeder whose impedance is 0.0005 + j0.0020 Ω/phase. The transformer impedance measured from high side is ZH = 1.42 + j1.82 Ω/phase. The line-to-line voltage in volts at the load when the load draws rated current from the transformers at a power factor of 0.80 lagging, is ______
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