A transformer is operating at rated Voltage and Current and supplying a resistive load. With the same input voltage, if we increase the resistance of the load, the core losses and the copper losses (losses in winding resistances) remain almost the same decrease UGOT increase

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Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.