Practical electricity .. with questions and answers (1911)
Cleveland armature works, [from old catalog] comp, Lincoln, John C. [from old catalog] · [Cleveland, Ohio, Cleveland armature works] · leaf 192
ack to the desired amount and does never open tlie arma-ture circuit, the opening of the main switch simply cutsthe current oif the motor. The instant after the mainswitch is opened the motor armature becomes a dynamoarmature at practically the same voltage and supplies thefield trolls with current… … Figure 67Diagram of connections of plain shunt wound motoTo An automatic rheostat or starting box is one which isprovided with a spring, which tends to throw the handleback to the position of greatest resistance. (See Fig. 68.)A magnet holds the handle in opposition to the spring inthat position in…
Electricity
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