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1 vote

Can this new AC motor/generator design work?

I'm not great with the theory of electromagnetism but the one principle that I do understand is that air gaps are the application killer. Have a look at any electromagnetic circuit and you will see ...
Transistor's user avatar
  • 10.8k
1 vote

Why are trams always electrified with DC, while trains can be electrified either with AC or DC?

It's not true that onboard rectification is required to enable speed control. Several early rural electric trams in France ran on fairly high AC voltages. That in Haute Vienne being typical. In rural ...
David T's user avatar
  • 11

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