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).
Graph showing the magnitude of brush-short-circuited currents at various excitations.
| Identifier | ExFiles\Box 34\3\ Scan130 | |
| Date | 15th May 1916 guessed | |
| CURVES SHOWING MAGNITUDE OF BRUSH-SHORT-CIRCUITED CURRENTS AT VARIOUS EXCITATIONS. DRIVING MOTOR ARMATURE CURRENT (AMPERES) EXCITING CURRENT (AMPERES) m + a + b + c + d curves 24 slot 45 slot 17 slot B 17 slot A m + a + c curves 45 and 17 slot. 24 slot. LOSSES ARE OBTAINED IN WATTS BY MULTIPLYING SCALE AMPERES BY 78.5 VOLTS | ||