This lesson covers the concept of power delivery in synchronous generators. It explains the equivalent circuit of a synchronous generator and how to calculate the complex power delivered by the source. The lesson further elaborates on the real and reactive power delivered by the generator. It introduces the concept of the load angle, also known as delta, and how it affects the power delivered. The lesson also discusses the special case when the armature resistance can be neglected. It concludes with the explanation of the operating conditions of a synchronous generator when connected to an infinite bus and the concept of under and over excitation.

- The power delivered by a synchronous generator can be calculated using the equivalent circuit of the generator.
- The real and reactive power delivered by the generator can be determined by the real part of the complex power.
- The load angle, or delta, plays a crucial role in the power delivered by the generator.
- In special cases where the armature resistance can be neglected, the real power output can be easily calculated.
- When a synchronous generator is connected to an infinite bus, the terminal voltage remains constant.
- A synchronous generator operating at a leading power factor must be under-excited, while one operating at a lagging power factor must be over-excited.

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