Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 355
II shows the approximate constancy of secondary cur-rent in a constant-current transformer supplying current to avarying number of arc lamps connected in series to its secondary coil. With 50 lamps, the primary current is 14.83 amperes; andwith 20 lamps, is 14.78 amperes. In the latter case, the… … ALTERNATING-CURRENT MACHINERY 301 530 watts per lamp. With 40 lamps, the primary current lags 55degrees behind the primary applied voltage; the power factor corre-sponding to this angle of lag is 0.574; and the power received fromthe mains is 2,200X14.81X0.574 which is equal to 18,800 watts,or 470…
Electrical engineering
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