Apparatus Subsection 63: Direct-current Commutating Machines: C. Commutating Machines 197
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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-63 |
| Location | lines 11795-11863 |
| Status | candidate |
| Word Count | 543 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”D. C. COMMUTATING MACHINES 197 ration coefficient, the field excitation required to produce the e.m.f . e (1 + p) is Fo (1 + sp) ; thus an additional excitation of spF0 is required at load, due to the armature resistance. 2. The demagnetizing effect of the ampere-turns armature reaction of the angle of shift of brushes TI requires an increase of field excitation by riFa. (Section VII.) 3. The distorting effect of armature reaction does not change the total m.m.f. producing the magnetic flux. If, however, mag- netic saturation is reached or approached in a part of the mag- netic circuit adjoining the air gap, the increase of magnetic density at the strengthened pole corner is less than the decrease at the weakened pole corner, and thus the total magnetic flux with the sameSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Magnetism
Section titled “Magnetism”... fect of the ampere-turns armature reaction of the angle of shift of brushes TI requires an increase of field excitation by riFa. (Section VII.) 3. The distorting effect of armature reaction does not change the total m.m.f. producing the magnetic flux. If, however, mag- netic saturation is reached or approached in a part of the mag- netic circuit adjoining the air gap, the increase of magnetic density at the strengthened pole corner is less than the decrease at the weakened pole ...Field language
Section titled “Field language”D. C. COMMUTATING MACHINES 197 ration coefficient, the field excitation required to produce the e.m.f . e (1 + p) is Fo (1 + sp) ; thus an additional excitation of spF0 is required at load, due to the armature resistance. 2. The demagnetizing effect of the ampere-turns armature reaction of the an ...Chapter-Local Concept Hits
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Section titled “Modern Engineering Reading Prompts”- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
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Section titled “Ether-Field Interpretive Boundary”- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
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