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).
Calculations for electrical impedance, resistance, and inductance of a secondary component.
| Identifier | ExFiles\Box 61b\4\ scan0061 | |
| Date | 6th November 1918 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To 19 Order No Customer's No. Z (Secondary) Impedance at 50.7~ = 14,580 w Taken on 200 volts a.e. with a.e. milli-ammeter for both current and voltage measurements. Resistance = 4,350 w Using inst. 40, 15 volt range for the voltage and inst. only for milli-amps. Hence reactance at 50.7~ = 13,900 w which gives an inductance of 43.7 henries. (Contd) Signed This Sheet must be filed on completion of the work. | ||