. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . S ») Fio. 41.—Outline of Thomson-Houston dynamo. DYNAMO-ELECTRIC MACHINES. 213 of the machine. At the same time, also, the total resistance in circuit being lessened by ex-tinction of lights or removal of resistance, while the current-strength remains constant, theenergy rejn-esented in the main circuit falls in proportion, and the mechanical energy expendedin producing tlie current fails in nearly
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . S ») Fio. 41.—Outline of Thomson-Houston dynamo. DYNAMO-ELECTRIC MACHINES. 213 of the machine. At the same time, also, the total resistance in circuit being lessened by ex-tinction of lights or removal of resistance, while the current-strength remains constant, theenergy rejn-esented in the main circuit falls in proportion, and the mechanical energy expendedin producing tlie current fails in nearly the same proportion. Speed variations are compen-sated for by the regulator controlling the brushes, as in cases of variations of resistance incircuit. In the machines for 35 and 50 2,000-candle-po\ver arc-lights the rmg-armaturc shown inFig. 40 has recently been adopted, as it oilers many advantages in better ventilation andhigher insulation, and, besides, permits of repairs more readily than the older form. Theaccompanying diagram (Fig. 41) and table give the various dimensions, weights, and capaci-ties of theThomson-Houston machines: CLASS. C £ H K L M P LD MD 1,25043 1,.W0 25}2
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
