Hand-drawn diagram of a dynamo, likely a Gramme-ring type, illustrating its electrical conditions at no load.
| Identifier | ExFiles\Box 3\5\ 05-page083 | |
| Date | 30th July 1919 guessed | |
| Conditions at the load., Fig: 1., N., Aux., Rotation, d, c, Resistance, Main, b, a, x, S, FIG. 1, Conditions at No Load. | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).