Field Stress, Strain, Pressure, and Tension Concordance
Field Stress, Strain, Pressure, and Tension
Section titled “Field Stress, Strain, Pressure, and Tension”Concordance status: generated from processed OCR/PDF text. Treat these as source-location aids until each passage is checked against the scan.
260 hits
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14 sources
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60 sections
Chapters, lectures, sections, or report divisions with matches.
Matched Aliases
Section titled “Matched Aliases”elastic, pressure, strain, stress, tension
Source Distribution
Section titled “Source Distribution”| Source | Hits | Sections |
|---|---|---|
| Radiation, Light and Illumination | 62 | 8 |
| General Lectures on Electrical Engineering | 54 | 8 |
| Theory and Calculation of Electric Circuits | 33 | 4 |
| Theory and Calculation of Alternating Current Phenomena | 27 | 5 |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 16 | 5 |
| Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients | 16 | 5 |
| Theory and Calculation of Transient Electric Phenomena and Oscillations | 13 | 7 |
| Theory and Calculation of Alternating Current Phenomena | 10 | 3 |
| Theory and Calculation of Alternating Current Phenomena | 10 | 3 |
| Engineering Mathematics: A Series of Lectures Delivered at Union College | 8 | 2 |
| America and the New Epoch | 6 | 5 |
| Theoretical Elements of Electrical Engineering | 3 | 3 |
| Four Lectures on Relativity and Space | 1 | 1 |
| Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co. | 1 | 1 |
Section Hits
Section titled “Section Hits”Representative Source Snippets
Section titled “Representative Source Snippets”Lecture 6: Luminescence - 31 hit(s)
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... he disruptive voltage, while with a supply voltage exceeding the disruptive voltage of the gas between the terminals, current exists, but the terminal voltage is apparently indepen- dent of the current, that is, if the other conditions as temperature, gas pressure, etc., remain the same, the terminal voltage of the Geissler tube or the spark gap remains the same and independent of the current, and the current is determined by the impedance between the. Geissler tube or spark gap and the source of 100 RADIATION, L ...Chapter 2: Electric Conduction. Gas And Vapor - 26 hit(s)
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... d at the terminals (hot cathode), are the conductors. Such conduction thus exists also in a perfect vacuum, and may be accompanied by practically no luminescence. 28 ELECTRIC CONDUCTION . 29 Disruptive Conduction 19. Spark conduction at atmospheric pressure is the disruptive spark, streamers, and corona. In a partial vacuum, it is the Geissler discharge or glow discharge. Spark conduction is dis- continuous, that is, up to a certain voltage, the "disruptive voltage," no conduction exists, except perhaps the ...Chapter 33: Efficiency Of Systems - 18 hit(s)
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... minimum potential difference in the system, or the potential difference per circuit or phase of the system. 431 432 ALTERNATING-CURRENT PHENOMENA In low-potential circuits, as secondary networks, where the potential is not limited by the insulation strain, but by the potential of the apparatus connected into the system, as incan- descent lamps, the proper basis of comparison is equality of the potential per branch of the system, or per phase. On the other hand, in long-distance transmissions where the po ...Lecture 5: Temperature Radiation - 17 hit(s)
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... ist between different bodies regarding their rate of evaporation. Thus water and benzine have practically the same boiling point, but at the same distance below the boiling point, benzine evaporates much faster than water; that is, has a much higher vapor tension. Carbon has a very high vapor tension, that is, shows a very rapid evaporation far below the boiling point, and since in the incan- descent lamp the carbon vapor condenses and is deposited on the globe and carbon is black, it blackens the globe and obstru ...Lecture 17: Arc Lighting - 16 hit(s)
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... liquid body the vibrating particles are so close together as to interfere with each other. If you could set a body in vibration, in which the vibrating particles, atoms or molecules, are so far apart as not to interfere with each other, as in a gas at low pressure, then they would execute their own periods of vibration, and then the light from such a body would not be a radiation of all wave lengths, but we would get radiations of 244 GENERAL LECTURES only a few definite wave lengths, or a line spectrum. So in- ...Lecture 1: General Review - 11 hit(s)
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... verter substation. The use of direct current is therefore restricted to those places where a fairly concentrated load exists, as in large cities; while in the suburbs, and in small cities and villages, where the load is too scattered to reach from one low tension supply point, sufficient customers to load a substation, the alternating current must be used, as it requires merely a step- down transformer which needs no attention. In the interior of large cities, the alternating current system is at a disadvantage, ...Lecture 8: Traveling Waves - 9 hit(s)
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... ions of different dissipation constants u. For instance, if in a circuit consisting of an unloaded transformer and a transmission line, as indicated in Fig. 40, at no load on the step-down trans- ^^ Line Transformer Line Fig. 40. former, the high-tension switches are opened at the generator end of the transmission line. The energy stored magnetically and dielectrically in line and transformer then dissipates by a transient, as shown in the oscillogram Fig. 41. This gives the oscillation of a circuit consi ...Lecture 8: Traveling Waves - 9 hit(s)
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... of different dissipation constants u. For instance, if a circuit consists of an unloaded transformer and a transmission line, as indicated in Fig. 40, that is, at no load on the step-down trans- ^> Line Transformer Line Fig. 40. former, the high-tension switches are opened at the generator end of the transmission line. The energy stored magnetically and dielectrically in line and transformer then dissipates by a transient, as shown in the oscillogram Fig. 41. This gives the oscillation of a circuit consi ...Lecture 5: Long Distance Transmission - 7 hit(s)
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... nce of the transformer building up with the line capacity. In those transformer connections in which several high 74 GENERAL LECTURES potential coils of different transformers are connected between the transmission wires, this may occur if the low tension coil of one of the transformers accidentally opens and the high potential coil of this transformer then acts as inductive react- ance in series with the line capacity in the circuit of the other transformer. ~r I ^ T Fife. 21. This may occur for ...Lecture 11: Lightning Protection - 7 hit(s)
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... arrester. Series resistance, however, also limited the discharge current, and with very heavy discharges, such lightning arresters with series resistance failed to protect the circuits, that is, failed to discharge the abnormal voltage without destructive pressure rise. This difficulty was solved by the introduction of shunted resistances, that is, resistances shunt- ing a part of the spark gaps. All the minor discharges then pass over the resistances and the unshunted spark gaps, the LIGHTNING PROTECTION 139 r ...Chapter 28: Copper Efficiency Of Systems - 7 hit(s)
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... n the system ; or 2d. On the basis of the minimum potential difference in the system, or the potential difference per circuit or phase of the system. In low potential circuits, as secondary networks, where the potential is not limited by the insulation strain, but by the potential of the apparatus connected into the system, as incandescent lamps, the proper basis of comparison is equality of the potential per branch of the system, or per phase. On the other hand, in long distance transmissions where the pot ...Chapter 30: Efficiency Of Systems - 7 hit(s)
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... n the system ; or 2d. On the basis of the minimum potential difference in the system, or the potential difference per circuit or phase of the system. In low potential circuits, as secondary networks, where the potential is not limited by the insulation strain, but by the potential of the apparatus connected into the system, as incandescent lamps, the proper basis of comparison is equality of the potential per branch of the system, or per phase. On the other hand, in long distance transmissions where the pot ...Lecture 8: Arc Lamps And Arc Lighting - 6 hit(s)
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... n of arc length and current, i, the voltage of the arc stream is ex- pressed by : k (I + I) ei = TT1-' (1 and the total arc voltage by : , *(*+*,: (2) where e0, k and Zt are constants of the terminal material (k, how- ever, varies with the gas pressure in the space in which the arc exists). This equation (2) represents the arc characteristics with good approximation, except for long low-current arcs, which usually require a higher voltage than calculated, as might be expected from the unsteady nature ...Chapter 14: Dielectric Losses - 6 hit(s)
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... ux density in the insulating material. Thus, for instance, in the dielectric field between parallel con- ductors, at a voltage far below that which would jump from conductor to conductor, locally at the conductor surface the concentration of electrostatic stress exceeds the dielectric strength of air, and causes it to break down as corona. In solid dielectrics, under similar conditions, the breakdown due to local over-stress DIELECTRIC LOSSES 161 often may change the flux distribution so as to gradually extend ...Chapter 3: Trigonometric Series - 5 hit(s)
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... two pressures between which the nozzle operates, is given in Fig. 54, as determined by experiment. As abscissas are used the nozzle mouth opening, that is, the widest part of the nozzle at the exhaust end, as fraction of that corresponding to the exhaust pressure, while the nozzle throat, that is, the narrowest part of the nozzle, is assumed as constant. As ordinates are plotted the efficiencies. This curve is not symmetrical, 'but falls off from the maximum, on the sides of larger nozzle mouth, far more rapidly t ...Lecture 8: Generation - 5 hit(s)
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... ndustry; while the steam turbine in the last ten years of its development has practically replaced the steam engine in large electric generating plants. The cause of the disadvantages of the gas engine is the high maximum temperature and the high maximum pressure compared with the mean pressure in the cylinders, which is necessary to get the greater temperature range and thus the efficiency, therefore is inherent in this type of apparatus. The output depends upon the mean pressure in the cylinder, which is low; ...Chapter 1: The Constants Of The Electric Circuit - 5 hit(s)
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... ergy always decreases from generating to receiving circuit, and the power gradient therefore is characteristic of the direc- tion of the flow of energy.) In the space outside of the conductor, during the flow of energy through the circuit, a condition of stress exists which is called the electric field of the conductor. That is, the surrounding space is not uniform, but has different electric and magnetic properties in different directions. No power is required to maintain the electric field, but energy 3 ...Lecture 2: General Distribution - 4 hit(s)
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... .109 ohms, and so 1.88 times as great as the reactance of two con- ductors of No. I in multiple, which latter is half that of one conductor No. i, or .058 ohms, provided that the two con- ductors are used as separate circuits. In alternating current low tension distribution, the size of the conductor and so the current per conductor, is limited by the self -inductive drop, and alternating current low tension networks are therefore of necessity of smaller size than those of direct current distribution. As regar ...