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Some highly admire Nicola Tesla for his work on AC power. But he wasn't the only one nor the first one - but he was a news worthy one ;-)
- The Extraordinary Life of Nikola Tesla Smithsonian
- http://www.edisontechcenter.org/generators.html
- http://www.edisontechcenter.org/GreatBarrington.html

Basic premise - a clearly stated question helps promote a clear answer.

Magnetic Puzzle

Source of the question(s)
In 2018 I was lurking about some people restoring old teletypes and connecting them to work in various combinations. I became interested in the motors used to drive the various units. There were two types:
  1. A series motor governed in speed by a make/break governor. The governor was adjusted by a built-in incandescent lamp whose light was chopped by a calibrated tuning fork.
  2. A synchronous motor of currently uncommon design.

I purchased a synchronous electric motor of the type used in Teletypes. Now, how to explain its operation in some detail to others, and myself?

Synchronous Reluctance Motor Introduction Concepts

Due to the nature of electrical and mechanical timings, the more usual "induction" motors (the speed of which sag as the load goes up were not used).

  1. I was trying to explain to friends how I thought they worked, and did a lot of hand waving. That seemed to confuse everyone even more.
  2. Then I thought a good diagram with vectors and formulas might help clarify the situation of all - so here we are.
Background
Magnets, such as part of this X-band magnetron, have attraction (sometimes fatal) for steel tools. Work is defined as force times distance (traveled), so clearly work is being done on your steel tool as it whizzes, unguided, to the magnet. (Considerable work is involved removing your tool from the powerful attraction.)
But this is one way, not a useful motor going around and around.

Definitions - we are confused enough even with 'em
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