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  • 61Thévenin's theorem — In electrical circuit theory, Thévenin s theorem for linear electrical networks states that any combination of voltage sources, current sources and resistors with two terminals is electrically equivalent to a single voltage source V and a single… …

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  • 62Kirchhoff's circuit laws — are two equalities that deal with the conservation of charge and energy in electrical circuits, and were first described in 1845 by Gustav Kirchhoff.[1] Widely used in electrical engineering, they are also called Kirchhoff s rules or simply… …

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  • 63Electric generator — U.S. NRC image of a modern steam turbine generator In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge (usually carried by electrons) to flow… …

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  • 64Oliver Joseph Lodge — Infobox Celebrity name = Sir Oliver Joseph Lodge caption = Vanity Fair cartoon . birth date = birth date|1851|6|12|mf=y birth place = Penkhull, Staffordshire occupation = Physicist and inventor prizes = Rumford Medal of the Royal Society in 1898… …

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  • 65Torque and speed of a DC motor — Torque of an electric motor is independent of speed. It is rather a function of flux and armature current.: N = frac{K(V IR)}{varphi} where: * N = number of turns * K = proportional constant * R = resistance of armature (ohms) * V = electromotive …

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  • 66battery — /bat euh ree/, n., pl. batteries. 1. Elect. a. Also called galvanic battery, voltaic battery. a combination of two or more cells electrically connected to work together to produce electric energy. b. cell (def. 7a). 2. any large group or series… …

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  • 67Battery — /bat euh ree/, n. The, a park at the S end of Manhattan, in New York City. Also called Battery Park. * * * Any of a class of devices, consisting of a group of electrochemical cells (see electrochemistry), that convert chemical energy into… …

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  • 68human disease — Introduction       an impairment of the normal state of a human being that interrupts or modifies its vital functions. health versus disease       Before human disease can be discussed, the meanings of the terms health, physical fitness, illness …

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  • 69Oliver Lodge — Sir Oliver Joseph Lodge Vanity Fair cartoon. Born 12 June 1851 (1851 06 12) Penkhull, Staffordshire …

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  • 70volt — (n.) unit of electromotive force, 1873, back formation from adj. VOLTAIC (Cf. voltaic) …

    Etymology dictionary