A single-phase 100-kVA, 14/2.4-kV transformer connected to a source through a line impedance of 38.2 + j140 as shown in Figure 1. The transformer's equivalent series impedance referred to the secondary is 0.10+ j0.40 2. The load is 90 kW at 0.8 lagging power factor and 2300 V. V source Source 38.2 Ω j140 Ω www Feeder (transmission line) 010 Ω j040 Ω www Transformer Figure 1: Circuit for Problem 1 a) Find the voltage of the source. b) Find the voltage regulation of the transformer for this load. c) Find the efficiency of the transformer ignoring the core losses. Load Load 90 kW 0.80 PF

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Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.