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).
Comparison of estimated and observed quantities for an E.A.C. Dynamo operating on the cutting in point as a shunt machine.
| Identifier | WestWitteringFiles\K\November1923\ Scan72 | |
| Date | 23th November 1923 | |
| 23.11.23. E.A.C. DYNAMO - ESTIMATED AND OBSERVED QUANTITIES OPERATING ON THE CUTTING IN POINT AS A SHUNT MACHINE. (18 SWG. FIELD BINDING) (HOT) Estimated. Observed. Armature resistance at 100°C. .38 .365 Field resistance at 100°C. 3.23 2.6 Field amperes. 4.2 5.2 Field turns 133 124 Field ampere turns. 560 645 Useful flux. 235,000 193,000 E.M.F. 15.2 15.5 Lost volts in armature. 1.6 1.9 P.D. 13.6 13.6 Speed. 413 520 EFC. | ||