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  • Hydroelectric power | Definition, Renewable Energy, Advantages . . .
    Hydroelectric power is a form of renewable energy in which electricity is produced from generators driven by turbines that convert the potential energy of moving water into mechanical energy Hydroelectric power plants usually are located in dams that impound rivers, though tidal action is used in some coastal areas
  • magnetohydrodynamic power generator - Britannica
    Magnetohydrodynamic power generator, any of a class of devices that generate electric power by means of the interaction of a moving fluid (usually an ionized gas or plasma) and a magnetic field Magnetohydrodynamic (MHD) power plants offer the potential for large-scale electrical power generation
  • Thermoelectric power generator | Renewable Energy Source | Britannica
    Thermoelectric power generator, any of a class of solid-state devices that either convert heat directly into electricity or transform electrical energy into thermal power for heating or cooling Such devices are based on thermoelectric effects involving interactions between the flow of heat and of
  • Electric generator - Stator Windings, Rotor, Alternator | Britannica
    Electric generator - Stator Windings, Rotor, Alternator: The maximum value of flux density in the air gap is limited by magnetic saturation in the stator and rotor iron, and is typically about one tesla (weber per square metre) The effective, or root-mean-square (rms), voltage induced in one turn of a stator coil in a 2-pole, 60-hertz generator is about 170 volts for each metre squared of
  • Alternator | Generator, Voltage Regulator AC Power | Britannica
    Alternator, Source of direct electric current in modern vehicles for ignition, lights, fans, and other uses The electric power is generated by an alternator mechanically coupled to the engine, with a rotor field coil supplied with current through slip rings, and a stator with a three-phase
  • Electric motor - Permanent Magnet, Rotor, Stator | Britannica
    Electric motor - Permanent Magnet, Rotor, Stator: The magnetic field for a synchronous machine may be provided by using permanent magnets made of neodymium-boron-iron, samarium-cobalt, or ferrite on the rotor In some motors, these magnets are mounted with adhesive on the surface of the rotor core such that the magnetic field is radially directed across the air gap In other designs, the
  • Electric motor - Induction, Rotor, Stator | Britannica
    Electric motor - Induction, Rotor, Stator: The stator frame consists of laminations of silicon steel, usually with a thickness of about 0 5 millimetre Lamination is necessary since a voltage is induced along the axial length of the steel as well as in the stator conductors The laminations are insulated from each other usually by a varnish layer This breaks up the conducting path in the
  • Tidal power | Description, Renewable Energy, Electricity Generation . . .
    Tidal power is a form of renewable energy in which the ocean’s tidal action is converted to electric power Tidal barrage power systems make use of the differences between high and low tides to generate electricity, whereas tidal stream power systems use ocean currents to drive generators
  • Encyclopedia Britannica | Britannica
    Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts
  • Nuclear reactor - Fission, Fusion, Breeder | Britannica
    Nuclear reactor - Fission, Fusion, Breeder: Most of the world’s existing reactors are power reactors, providing the heat needed to turn turbines that run electric-power generators There are also numerous research reactors, and some navies of the world have submarines or surface ships driven by propulsion reactors There are several types of power reactors, but only one, the light-water





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