(ET-112-Phifer)

**ET-112: Fundamentals of Electrical Science - Transformers I **

**Description**: This module introduces transformer theory and includes the types of transformers, voltage/current relationships, and application. It contains the following topics: Transformer Theory (Mutual Induction, Turns Ratio, Impedance Ratio, Efficiency, Theory of Operation, Voltage Ratio, Current Ratio, Three-Phase Transformer Connections, Delta Connection, Wye Connection, Combinations of Delta and Wye Transformer Connections, Transformer Losses and Efficiency, Transformer Operation Under No-Load, and Coil Polarity)