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  2. Electric motor | Definition, Types, & Facts | Britannica

    www.britannica.com/technology/electric-motor

    Electric motor, any of a class of devices that convert electrical energy to mechanical energy, usually by employing electromagnetic phenomena. Most electric motors develop their mechanical torque by the interaction of conductors carrying current in a direction at right angles to a magnetic field.

  3. Electric motor - Synchronous, Rotating Fields, AC Motors |...

    www.britannica.com/technology/electric-motor/Synchronous-motors

    Electric motor - Synchronous, Rotating Fields, AC Motors: A synchronous motor is one in which the rotor normally rotates at the same speed as the revolving field in the machine. The stator is similar to that of an induction machine consisting of a cylindrical iron frame with windings, usually three-phase, located in slots around the inner ...

  4. Electric circuit | Diagrams & Examples | Britannica

    www.britannica.com/technology/electric-circuit

    An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.

  5. motor and engine - Students | Britannica Kids | Homework Help

    kids.britannica.com/students/article/motor-and-engine/275953

    Electric Motors. Electric motors consist of two mechanical parts—a stator, or stationary part, and a rotor, or revolving part—and two sets of electrical windings—the field and the armature.

  6. Electric motor - Permanent Magnet, Rotor, Stator | Britannica

    www.britannica.com/technology/electric-motor/Permanent-magnet-motors

    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.

  7. Electric generator | Types, Uses & Advantages | Britannica

    www.britannica.com/technology/electric-generator

    Electric generator, any machine that converts mechanical energy to electricity for transmission and distribution over power lines to domestic, commercial, and industrial customers. Generators also produce the electrical power required for automobiles, aircraft, ships, and trains.

  8. Electric car | Environment, Efficiency & Cost Savings |...

    www.britannica.com/technology/electric-car

    electric car, battery-powered motor vehicle, originating in the late 1880s and used for private passenger, truck, and bus transportation. Discover the impacts of electric vehicles on the electrical power grid and explore ways to reduce their carbon footprint Learn about the environmental implications of the increased load on the electrical ...

  9. Electric motor - Induction, Rotor, Stator | Britannica

    www.britannica.com/technology/electric-motor/Construction-of-induction-motors

    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.

  10. Michael Faraday | Biography, Inventions, & Facts | Britannica

    www.britannica.com/biography/Michael-Faraday

    Michael Faraday, English physicist and chemist whose many experiments contributed greatly to the understanding of electromagnetism. Among his achievements, he was the first to produce an electric current from a magnetic field and invented the first electric motor and dynamo. Learn about his life and career.

  11. Electromagnetism | Definition, Equations, & Facts | Britannica

    www.britannica.com/science/electromagnetism

    A changing magnetic field produces an electric field, as the English physicist Michael Faraday discovered in work that forms the basis of electric power generation. Conversely, a changing electric field produces a magnetic field, as the Scottish physicist James Clerk Maxwell deduced.

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