A single phase transformer with 50 kVA, 2400V/240V, 50 Hz; Idle operating voltage 2400V, idle current is 0.2A and idling power is 180W. Short circuit operating voltage It is 55V, the short-circuit current is 20.83A, and the short-circuit power is 620W. According to this; a) Calculate the equivalent winding resistance reduced to primary, equivalent winding reactance and equivalent winding impedance. b) Calculate the magnetization reactance and core loss resistance. c) Copper and iron (core) losses for operation at 0.95 (reverse) power factor at half load. Find and calculate the efficiency of the transformer.

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A single phase transformer with 50 kVA, 2400V/240V, 50 Hz; Idle operating voltage 2400V, idle current is 0.2A and idling power is 180W. Short circuit operating voltage It is 55V, the short-circuit current is 20.83A, and the short-circuit power is 620W. According to this;

a) Calculate the equivalent winding resistance reduced to primary, equivalent winding reactance and equivalent winding impedance.

b) Calculate the magnetization reactance and core loss resistance.

c) Copper and iron (core) losses for operation at 0.95 (reverse) power factor at half load. Find and calculate the efficiency of the transformer.

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