Question 157Electricity & Electronics - 1st Asst/Chief

The correct answer is B) 14.2 A. To calculate the primary current, we need to use the formula: Primary Current = (Load Power) / (Voltage × Power Factor). Given: - Transformer voltage: 440/110 V single phase - Load power: 5 kW - Power factor: 0.8 Plugging these values into the formula: Primary Current = (5 kW) / (440 V × 0.8) Primary Current = 14.2 A The other options are incorrect because: A) 11.36 A is too low, as it does not account for the power factor. C) 45.45 A is too high, as it does not use the correct transformer voltage. D) 56.82 A is too high, as it does not use the correct power factor.