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 273
fairly uniform value. Of course, in the parallel posi-tion the car draws approximately twice the current that it doesin the series position. Some cars do not draw uniform current evenwith the best of care on the part of the motorman. This is due to theincorrect arrangement of the resistances on the… … 20 30 -40 50 SECONDS Fig. 131. Speed Curves counter e. m. f. of the motor rises with increase of speed. Our prob-lem is to determine the rate of acceleration at various parts of thespeed curve and from this to determine the speed at the variouspoints. In Fig. 131 is shown such a curve. It is…
Electrical engineering
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