Poole, Cecil Percy, 1863- · New York : McGraw · leaf 93
ge coefficient 1.3 Resistance of field winding, ohms 169 Exciting current, amperes 0.68 Approximate efficiency, allowing 5 per cent for friction and windage 80% The starting box should be purchased from any of the standard rheostatbuilders; a satisfactory home-made one of this size is rarely… … FIG. 99 FIG. of machine tools. The motor is of the bipolar iron-clad type; the fieldmagnet having the form and dimensions shown by Fig. 102. Fig. 98 is 84 DIRECT-CURRENT no-VOLT FAN MOTOR 85 an axial cross-section of the motor frame taken vertically. It is intendedthat the magnet proper shall be of…
Electric generators -- Design and construction · Electric motors -- Design and construction
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