Electrical and Mechanical Degrees — Lesson 2

This lesson covers the concept of electrical and mechanical degrees in the context of rotating machines. It explains the difference between these two measures and how they relate to the number of poles in a machine. The lesson also discusses the concept of electrical speed and how it is always greater than mechanical speed in a machine. It further explains how the placement of a coil in a machine affects the voltage induced across it. The lesson also introduces the concept of coil span and how it should always be 180 degrees electrical for maximum voltage.

Video Highlights

00:22 - Introduction to electrical and mechanical degrees
01:15 - Explanation of electrical speed and its relation to mechanical speed
06:46 - Discussion on electrical and mechanical degrees in relation to the magnetic field distribution
28:17 - Introduction to the concept of coil span

Key Takeaways

- Electrical and mechanical degrees are different measures used in rotating machines. The number of poles in a machine determines the relationship between these two measures.
- Electrical speed is always greater than mechanical speed in a machine.
- The placement of a coil in a machine affects the voltage induced across it. For maximum voltage, the coil span should always be 180 degrees electrical.