An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 449
d-c. series motorwill operate on no load if connected to an a-c. line of thesame voltage, but, when a load is put on, it is quite likely tospark badly at the brushes. However, such motors of smallsize are used commercially t<» operate small vacuum cleaners,office appliances, dental engines, and… … Fig. 2bl. — Field structure of a single-phase series railway motor. ALTERNATING-CURRENT MOTORS 405 a single-phase series motor with commutator has been de-veloped for railway service to operate on either d-c. or a-c.lines. In railway work there is need for a motor with large start-ing torque so…
Electricity · Magnetism
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