A 440/110 V single phase transformer supplies a load of 5 kW at 0.8 power factor load. What will be its primary current?

Correct Answer: Option C — 14.2 A

To find the primary current, first calculate the apparent power by dividing the active power (5 kW) by the 0.8 power factor, yielding 6.25 kVA. Dividing this apparent power of 6,250 VA by the primary voltage of 440 volts results in a primary current of 14.2 amps.