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).
Continuation of calculations for Test No. 27, detailing electrical performance measurements in a table.
| Identifier | ExFiles\Box 75\3\ scan0229 | |
| Date | 31th January 1925 | |
| TEST No. 27 Contd. (CALCULATIONS) | Extra on load Volts. | Extra on load Amps. | Armature resistance (Ohms). | Ohmic volts light. | Back E.M.F. | Power delivered Watts. | Power delivered H.P. (H). | % Slip. | Engine speed. | |---|---|---|---|---|---|---|---|---| | 1.02 | 1.92 | .532 | .888 | 12.72 | 24.4 | .033 | | | | 1.53 | 2.35 | .652 | 1.168 | 24.00 | 56.4 | .076 | | | | 1.74 | 2.62 | .664 | 1.248 | 35.99 | 94.3 | .126 | | | | 1.95 | 3.51 | .556 | 1.190 | 48.42 | 170.0 | .228 | | | | 1.23 | 3.60 | .342 | .732 | 61.16 | 220.0 | .295 | | | | 1.43 | 3.86 | .370 | .766 | 72.99 | 281.5 | .378 | | | | 1.54 | 4.26 | .362 | .738 | 85.70 | 364.5 | .488 | | | | 1.53 | 4.85 | .316 | .648 | 97.15 | 472.0 | .632 | | | 31.1.25. | ||