Hi, I want to calculate voltage regulation of a transfromer. I have learned that voltage regulation is (Vnl-Vfl)/Vfl. While solving some problems for practice I came across multiple questions. In some of them where the load is given I understand how to solve them. I just find the No load voltage and then the voltage at load when the load is connected. But in the problems where it is written that find the voltage regulation at full load and "LOAD" is not specified there the writer find voltage regulation like this: 1. Find the voltage at the secondary of the transformer by adding the voltage drop at the Rp and Xp and voltage at output. 2. Uses rated voltage in place of Vfl. 3. Finds the Voltage Regulation. I can't understand why is the writer doing it. Spent my whole day trying to understand it. Please Help.