Chapter 16: Induction Motor
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theory and Calculation of Alternating Current Phenomena |
| Year | 1900 |
| Section ID | theory-calculation-alternating-current-phenomena-1900-chapter-16 |
| Location | lines 13649-16361 |
| Status | candidate |
| Word Count | 10739 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 4 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”CHAPTER XVI. INDUCTION MOTOR. 151. A specialization of the general alternating-current transformer is the induction motor. It differs from the stationary alternating-current transformer, which is also a specialization of the general transformer, in so far as in the stationary transformer only the transfer of electrical energy from primary to secondary is used, but not the mechanical force acting between the two, and therefore primary and secondary coils are held rigidly in position with regard to each other. In the induction motor, only the mechanical force between primary and secondary is used, but not the transfer of electrical energy, and thus the secondary circuits closed upon themselves. Transformer and induction motor thus are the two limiting cases of the general alternating- current transformer. Hence the induction motor consists of a magnetic circuit interlinked with two electricSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Magnetism
Section titled “Magnetism”... and secondary is used, but not the transfer of electrical energy, and thus the secondary circuits closed upon themselves. Transformer and induction motor thus are the two limiting cases of the general alternating- current transformer. Hence the induction motor consists of a magnetic circuit interlinked with two electric circuits or sets of circuits, the primary and the secondary circuit, which are movable with regard to each other. In general a num- ber of primary and a number of secondary circuits are used, angularly displaced around the periphery of t ...Impedance / reactance
Section titled “Impedance / reactance”... rcuit reduced to primary system; if // = secondary current per circuit, fl= — = secondary current per circuit reduced to primary system ; if r^ = secondary resistance per circuit, rt = a2 r{ = secondary resistance per circuit reduced to primary system ; if x± = secondary reactance per circuit, xt = a2 x\ = secondary reactance per circuit reduced to primary system ; if £/ = secondary impedance per circuit, z1 = azz\ = secondary impedance per circuit reduced to primary system ; that is, the number of secondary circuits and of turns per secondary cir ...Radiation / light
Section titled “Radiation / light”... to retain secondary circuits in inductive relation to primary circuits and vice versa, in spite of their relative motion. The result of the relative motion between primary and secondary is, that the E.M.Fs. induced in the secondary or the motor armature are not of the same frequency as the E.M.Fs. impressed upon the primary, but of a frequency which is the difference between the impressed frequency 238 ALTERNATING-CURRENT PHENOMENA. and the frequency of rotation, or equal to the "slip," that is, the difference between synchronism and speed (in cycle ...Alternating current
Section titled “Alternating current”CHAPTER XVI. INDUCTION MOTOR. 151. A specialization of the general alternating-current transformer is the induction motor. It differs from the stationary alternating-current transformer, which is also a specialization of the general transformer, in so far as in the stationary transformer only the transfer of electrical energy from primary to secondary is used ...Chapter-Local Concept Hits
Section titled “Chapter-Local Concept Hits”| Concept Candidate | Hits In Section | Status |
|---|---|---|
| Frequency | 51 | seeded |
| Ether | 3 | seeded |
Chapter-Local Glossary Hits
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| ether | 3 | seeded |
Equation Candidates
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Figure Candidates
Section titled “Figure Candidates”| Candidate ID | OCR / PDF-Text Candidate | Source Location |
|---|---|---|
theory-calculation-alternating-current-phenomena-1900-fig-115 | EOG Fig. 115. 156. Thus far the diagram is essentially the same as | line 14010 |
theory-calculation-alternating-current-phenomena-1900-fig-119 | ӣ> Fig. 119. Again, a maximum torque point and a maximum output | line 14959 |
theory-calculation-alternating-current-phenomena-1900-fig-120 | 267 Fig. 120. 268 ALTERNATING-CURRENT PHENOMENA. | line 14974 |
theory-calculation-alternating-current-phenomena-1900-fig-122 | 1000 2000 3COO 4000 fiOOO fiOOO 7000 8000 Fig. 122. Voltampere output, | line 15137 |
Hidden-Gem Quote Candidates
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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.
- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
- 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.
- Field language: Read for whether field language is mechanical, geometrical, causal, descriptive, or simply a convenient engineering model.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
- 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.
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Section titled “Promotion Checklist”- Open the full source text and the scan or raw PDF.
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