Chapter 17: Inductor Machines
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theory and Calculation of Electric Apparatus |
| Year | 1917 |
| Section ID | theory-calculation-electric-apparatus-chapter-15 |
| Location | lines 20294-20974 |
| Status | candidate |
| Word Count | 3640 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”CHAPTER XVII INDUCTOR MACHINES Inductor Alternators, Etc. 156. Synchronous machines may be built with stationary field and revolving armature, as shown diagrammatically in Fig. 134, or with revolving field and stationary armature, Fig. 135, or with stationary field and stationary armature, but revolving magnetic circuit. The revolving-armature type was the most frequent in the early days, but has practically gone out of use except for special Fia. 134. — Revolving armature alternator Fig. 135.— Revolving field al ternator. purposes, and for synchronous commutating machines, as the revolving-armature type of structure is almost exclusively used for commutating machines. The revolving-field type is now almost exclusively used, as the standard construction of alter- nators, synchronous motors, etc. The inductor type had been used to a considerable extent, and had a high reputation in the Stanley alternator. ItSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Magnetism
Section titled “Magnetism”... Inductor Alternators, Etc. 156. Synchronous machines may be built with stationary field and revolving armature, as shown diagrammatically in Fig. 134, or with revolving field and stationary armature, Fig. 135, or with stationary field and stationary armature, but revolving magnetic circuit. The revolving-armature type was the most frequent in the early days, but has practically gone out of use except for special Fia. 134. — Revolving armature alternator Fig. 135.— Revolving field al ternator. purposes, and for synchronous commutating machines ...Field language
Section titled “Field language”CHAPTER XVII INDUCTOR MACHINES Inductor Alternators, Etc. 156. Synchronous machines may be built with stationary field and revolving armature, as shown diagrammatically in Fig. 134, or with revolving field and stationary armature, Fig. 135, or with stationary field and stationary armature, but revolving magnetic circuit. The revolving-armature type was the most frequent in the early days, ...Radiation / light
Section titled “Radiation / light”... ature turns of the inductor alternator, thus is #i — *», while that in the revolving-field or revolving-armature type of alternator is 2 *„. The general formula of voltage induction in an alternator is: (1) ! - y/2 «/«*„, 27G ELECTRICAL APPARATUS where : / = frequency, in hundreds of cycles, n = number of armature turns in series, *0 = maximum magnetic flux, alternating through the armature turns, in megalines, e = effective value of induced voltage. *i — *s taking the place of 2 *0, in the inductor alternator, the equation of voltage i ...Alternating current
Section titled “Alternating current”CHAPTER XVII INDUCTOR MACHINES Inductor Alternators, Etc. 156. Synchronous machines may be built with stationary field and revolving armature, as shown diagrammatically in Fig. 134, or with revolving field and stationary armature, Fig. 135, or with stationary field and stationary armature, but revo ...Chapter-Local Concept Hits
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| Frequency | 37 | seeded |
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
- Field language: Read for whether field language is mechanical, geometrical, causal, descriptive, or simply a convenient engineering model.
- Radiation / light: Compare the chapter’s radiation vocabulary with modern electromagnetic radiation, spectral frequency, wavelength, absorption, and illumination engineering.
- Alternating current: Compare Steinmetz’s AC language with modern sinusoidal steady-state analysis, RMS quantities, phase, and phasor notation.
- Waves / transmission lines: Map Steinmetz’s wave and line language onto modern distributed constants, propagation velocity, standing waves, and reflections.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
- 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.
- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
- Waves / transmission lines: Standing/traveling wave passages may support richer field interpretations; the page keeps those readings separate from verified Steinmetz wording.
Promotion Checklist
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