Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1101
ring is very strong compared to the field, it will be considerable. In dynamos, with increasing load, the brushes shouldbe shifted in the direction of rotation, and in the oppositedirection when the load decreases. Never allow a dynamo or motor to stand in a damp placeuncovered. Moisture is apt to… … Fig. 457circuits in a series dynamo or motor the armature, or commutator, it is bound to cause trouble.Water should only be used in case of emergency, and thensparingly. Sparking.—When a current is broken there is always aspark, which is greater the more turns in the wire, and themore iron within…
