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 192
input and from thisthe efficiency from the relation. r^rn • Output Lfiiciency = ——*--^ Input The per cent efficiency curve in the figure is seen to increasequite rapidly at first but gradually tends to become horizontal andon overload it would begin to fall. This change in the efficiency isdue to… … DIRECT-CURRENT DYNAMOS PART III DESIGN The various parts of continuous-current generators from a con-structive point of view, may be grouped under the following heads: (1) Construction of the Frame (2) Construction of the Armature (3) Construction of Commutator and Brush (4) Construction of the…
Electrical engineering
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