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 350
eld weakening, adjust- 311 66 TYPES OF GENERATORS AND MOTORS able speed motors which give speed ranges of 2 to 1, 21 to 1, or 3 to1, as desired. It also can be arranged for floor, side wall, or ceilingmounting or with vertical shaft. By adding proper covers to the open type it becomes enclosedor… … Fig. 81. Crocker-Wheeler Form H Commutating Pole Motor tides. Being almost airtight, they are of a larger frame for a givenoutput than open ventilated motors; but with proper windings andframe they may be practically of the same efficiency as the opentypes. They are not well adapted for continuous…
Electrical engineering
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