Apparatus Section 8: Direct-current Commutating Machines: Armature Reaction
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theoretical Elements of Electrical Engineering |
| Year | 1915 |
| Section ID | theoretical-elements-electrical-engineering-section-59 |
| Location | lines 11616-11694 |
| Status | candidate |
| Word Count | 482 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”VIII. Armature Reaction 55. At no load, that is, with no current in the armature cir- cuit, the magnetic field of the commutating machine is sym- metrical with regard to the field poles. Thus the density at the armature surface is zero at the point or in the range midway between adjacent field poles. This point, or range, is called the "neutral" point or "neutral" range of the commutating machine. Under load the armature current represents a m.m.f. acting in the direction from commutator brush to commutator brush of opposite polarity, that is, in quadrature with the field m.m.f. if the brushes stand midway between the field poles; or shifted against the quadrature position by the same angle by which the commutator brushes are shifted, which angle is called the angle of lead. If nSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Field language
Section titled “Field language”VIII. Armature Reaction 55. At no load, that is, with no current in the armature cir- cuit, the magnetic field of the commutating machine is sym- metrical with regard to the field poles. Thus the density at the armature surface is zero at the point or in the range midway between adjacent field poles. This point, or range, is called the "neutral" ...Magnetism
Section titled “Magnetism”VIII. Armature Reaction 55. At no load, that is, with no current in the armature cir- cuit, the magnetic field of the commutating machine is sym- metrical with regard to the field poles. Thus the density at the armature surface is zero at the point or in the range midway between adjacent field poles. This point, or range, is called the "ne ...Chapter-Local Concept Hits
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Field language: Read for whether field language is mechanical, geometrical, causal, descriptive, or simply a convenient engineering model.
- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Field language: Field-pressure or field-gradient interpretations can be explored here only after the explicit source passage and modern engineering translation are kept distinct.
- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
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