150 kVA, 2400/240 V single-phase transformer has the parameters.
(a) Determine the equivalent circuit referred to the high-voltage side.
(b) Find the primary voltage and voltage regulation when transformer is operating at full load 0.8 power factor lagging and 240 V.
(c) Find the primary voltage and voltage regulation when the transformer is operating at full-load 0.8 power factor leading and 240 V.