Question

The primary transformer voltage is 2.8 kV and the secondary is 230 V. The transformer is connected to a variable load (0 to 300 kW) with a lagging power factor of 0.83 and a load voltage equal to the rated transformer secondary. Determine: (a) the total input impedance of the transformer when the secondary is shorted; and (b) the input current, voltage, power and power factor at full load (150 kW). (c) Plot the voltage regulation versus load, and determine the load

Answer 1

a) πa⁵ Po² / 6E

Vacuum has infinite volume that's why I didn't consider that for total energy calculations

Step-by-step explanation:

Check attached images for explanation and solutions to b and c