Apparatus Section 2: Alternating-current Transformer: Low T*r Loss Type,
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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-98 |
| Location | lines 17030-17323 |
| Status | candidate |
| Word Count | 391 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 1 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”II. Low t*r loss type, Fig. 155 Exciting current 4 per cent. 4 per cent. Primary resistance loss 1 per cent. 0 . 5 per cent. Secondary resistance loss Core loss 1 per cent. 1 per cent. 0 . 5 per cent. 2 per cent. For convenience, exciting current and losses are frequently given in per cent, of the full-load output of the transformer. The curves correspond to non-inductive load. The core loss comprises hysteresis, which varies with the 1.6 power of the induced voltage and eddies proportional to the square of induced voltage. Hence, within the narrow range of variation of the induced voltage between no load and full load of a constant poten- tial transformer, the core loss can be approximated as propor- tional to the 1.7 power of the induced voltage. TheSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Radiation / light
Section titled “Radiation / light”... nsformer 1% Iron Loss 2% i2r Loss .9 1.0 1.1 1.2 1.3 1.4 1.5 .1 .2 .3 .4 .5 .6 .7 .8 FIG. 154. — Efficiency and losses of low core loss transformer. 114. In transformers for lighting and general distribution {usually with 2300 volt primary and 2 X 115 volt secondary) the transformer is generally heavily loaded only for a short time during the day, partly loaded for a moderate time, and prac- tically unloaded for most ...Alternating current
Section titled “Alternating current”... 4. In transformers for lighting and general distribution {usually with 2300 volt primary and 2 X 115 volt secondary) the transformer is generally heavily loaded only for a short time during the day, partly loaded for a moderate time, and prac- tically unloaded for most of the time. Thus load curves of such a transformer would be: ALTERNATING-CURRENT TRANSFORMER 283 A. Lighting and power B. Lighting only 2 hours at IK load. 2 h ...Hysteresis
Section titled “Hysteresis”... 1 per cent. 0 . 5 per cent. 2 per cent. For convenience, exciting current and losses are frequently given in per cent, of the full-load output of the transformer. The curves correspond to non-inductive load. The core loss comprises hysteresis, which varies with the 1.6 power of the induced voltage and eddies proportional to the square of induced voltage. Hence, within the narrow range of variation of the induced voltage between no load and full load of a constant poten- tial t ...Chapter-Local Concept Hits
Section titled “Chapter-Local Concept Hits”| Concept Candidate | Hits In Section | Status |
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| Light | 3 | seeded |
Chapter-Local Glossary Hits
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Figure Candidates
Section titled “Figure Candidates”| Candidate ID | OCR / PDF-Text Candidate | Source Location |
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theoretical-elements-electrical-engineering-fig-155 | Fig. 154 II. Low t*r loss type, Fig. 155 Exciting current | line 17031 |
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- 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.
- Hysteresis: Compare the passage with modern magnetic loss, B-H loop area, lag, material memory, and empirical loss laws.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
- Hysteresis: An interpretive reading can treat hysteresis as field lag or memory, but the historical claim must remain Steinmetz’s actual magnetic-loss treatment.
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