The document discusses the construction and principle of operation of single phase transformers, highlighting mutual inductance and their working under load and without load. It also covers the EMF equation of transformers and categorizes them based on the number of turns.

2. Summary
• Construction of single phase transformer
• Principle of operation - Mutual Inductance
• Working of single phase transformer
• With load and without load
• EMF equation of transformer
• Types of transformer based on Number of turns