Hand cranked dynamos are used in clockwork radios, hand powered flashlights, mobile phone rechargers, and other human powered equipment to recharge batteries.
They were all desirable and all expensive and included extra dynamoes, extra evaporators, a new wardroom, better mess decks here and there and quite a lot of other things.
The dynamos are constantly improving.
There is one of the dynamos.
Nuclear fission results in the release of energy in the form of heat; heat can always be used to drive engines, engines to work dynamos, and dynamos to produce electricity.
Many trades in the past were making motor cars and dynamos, but they will have been switched over to tanks and aeroplane engines.
The dynamos are not in the least experimental, they are far past that stage.
One example is locomotives, another is motor cars, another is electrical machinery of all kinds, turbo-generators, transformers, dynamos and so on.
