Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 174
pressure becomes zero, therefore,when the coil is in the position of zero pressure, as in fig. 1,413, 1,162 HAWKIXS ELECTRICITY the current is still flowing and sets up a magnetic field whichopposes the main field as indicated by the dotted arrows, thusweakening the main field. Ques. In what kind… … Fig. 1.414.—Section of armature and field showing strengthening effect of armature reaction whenthe current leads the pressure. If the circuit contain an excess of capacity the current willlead the pressure, so that when the coil is in the position of zero induction, as shown,the current will have…
Electrical engineering
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