Apparatus Section 6: Synchronous Machines: Characteristic Curves of Alternating-current Generator
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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-27 |
| Location | lines 9170-9291 |
| Status | candidate |
| Word Count | 335 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”VI. Characteristic Curves of Alternating-current Generator 15. In Fig. 59 are shown, at constant terminal voltage E, the values of nominal generated e.m.f. E0, and thus of field excitation FQ, with the current 7 as abscissas and for the three conditions, 1. Non-inductive load, p = 1, q = 0. 2. Inductive load of 0 = 60 degrees lag, p = 0.5, q = 0.866. 3. Anti-inductive load of — 6 = 60 degrees lead, p = 0.5, q = -0.866. SYNCHRONOUS MACHINES 139 The values r = 0.1, XQ = 5, E = 1000, are assumed. These curves are called the compounding curves of the synchronous generator. In Fig. 60 are shown, at constant nominal generated e.m.f. EQ, that is, at constant field excitation F0, the values of terminal vol- E = 000 £=5,Source-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Field language
Section titled “Field language”VI. Characteristic Curves of Alternating-current Generator 15. In Fig. 59 are shown, at constant terminal voltage E, the values of nominal generated e.m.f. E0, and thus of field excitation FQ, with the current 7 as abscissas and for the three conditions, 1. Non-inductive load, p = 1, q = 0. 2. Inductive load of 0 = 60 degrees lag, p = 0.5, q = 0.866. 3. Anti-inductive load of — 6 = 60 degrees lead, p = ...Alternating current
Section titled “Alternating current”VI. Characteristic Curves of Alternating-current Generator 15. In Fig. 59 are shown, at constant terminal voltage E, the values of nominal generated e.m.f. E0, and thus of field excitation FQ, with the current 7 as abscissas and for the three condition ...Ether references
Section titled “Ether references”... ximum output, 124 kw., at full non-induct- ive load excitation, which is 1.24 times rated output, at 775 volts and 160 amp. It depends upon the point on the field SYNCHRONOUS MACHINES 141 characteristic at which the alternator works, whether it tends to regulate for, that is, maintains, constant voltage, or constant current, or constant power, approximately. z L 7 \ H 20 40 60 80 100 120 140 160 180 200 220 240 260 280 AMP. FIG. 61. — Synchronous g ...Impedance / reactance
Section titled “Impedance / reactance”... E = 000 £=5, '•*& z EO.F, 500 20 10 00 80 100 120 UO 160 180 200AMP. FIG. 59. — Synchronous generator compounding curves. tage E with the current I as abscissas and for the same resistance and synchronous reactance r = 0.1, XQ = 5, for the three different conditions, 1. Non-inductive load, p = 1, q = 0, EQ = 1127. 2. Inductive load of 60 degrees lag, p = Q.5, q = 0.866, E0 = 1458. 140 ELEMENTS OF ELECTRICAL ENGINEERING 3. Anti-inductiv ...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.
- Alternating current: Compare Steinmetz’s AC language with modern sinusoidal steady-state analysis, RMS quantities, phase, and phasor notation.
- Ether references: Verify exact wording before drawing conclusions. Ether language must be separated from later interpretive systems.
- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
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.
- Ether references: If Steinmetz mentions ether, quote only the verified source words first; any broader ether-field synthesis belongs in a labeled interpretive layer.
Promotion Checklist
Section titled “Promotion Checklist”- Open the full source text and the scan or raw PDF.
- Verify the chapter boundary and surrounding context.
- Promote exact quotations only after checking the source image.
- Move mathematical candidates into canonical equation pages only after formula typography is corrected.
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