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  2. Wound rotor motor - Wikipedia

    en.wikipedia.org/wiki/Wound_rotor_motor

    Compared to a squirrel-cage rotor, the rotor of the slip ring motor has more winding turns; the induced voltage is then higher, and the current lower, than for a squirrel-cage rotor. During the start-up a typical rotor has 3 poles connected to the slip ring. Each pole is wired in series with a variable power resistor.

  3. Slip ring - Wikipedia

    en.wikipedia.org/wiki/Slip_ring

    This can be used in starting a slip-ring induction motor, for example. A slip ring is an electromechanical device that allows the transmission of power and electrical signals from a stationary to a rotating structure. A slip ring can be used in any electromechanical system that requires rotation while transmitting power or signals. It can ...

  4. Doubly fed electric machine - Wikipedia

    en.wikipedia.org/wiki/Doubly_fed_electric_machine

    However, the slip power was lost in the resistors. Thus means to increase the efficiency in variable speed operation by recovering the slip power were developed. In Krämer (or Kraemer) drives the rotor was connected to an AC and DC machine set that fed a DC machine connected to the shaft of the slip ring machine. [7] Thus the slip power was ...

  5. Harbor Freight Tools - Wikipedia

    en.wikipedia.org/wiki/Harbor_Freight_Tools

    Harbor Freight Tools won a declassification of the class action; that is, the court found that all the individual situations were not similar enough to be judged as a single class, and that their claims would require an individual-by-individual inquiry, so the case could not be handled on a class basis.

  6. Enigma rotor details - Wikipedia

    en.wikipedia.org/wiki/Enigma_rotor_details

    Tracing the signal on the rotors AAA is therefore only possible if a key is pressed while the rotors were in the position AAZ and the ring settings are all on 01 or A. With the rotors I, II, III (from left to right), wide B-reflector , all ring settings in B-position , and start position AAA , typing AAAAA will produce the encoded sequence EWTYX .

  7. Commutator (electric) - Wikipedia

    en.wikipedia.org/wiki/Commutator_(electric)

    The faster the rotor spins, the further this degree of field distortion. Because a motor or generator operates most efficiently with the rotor field at right angles to the stator field, it is necessary to either retard or advance the brush position to put the rotor's field into the correct position to be at a right angle to the distorted field.

  8. Squirrel-cage rotor - Wikipedia

    en.wikipedia.org/wiki/Squirrel-cage_rotor

    Diagram of the squirrel-cage (showing only three laminations) The motor rotor shape is a cylinder mounted on a shaft. Internally it contains longitudinal conductive bars (usually made of aluminium or copper) set into grooves and connected at both ends by shorting rings forming a cage-like shape.

  9. Rotor (electric) - Wikipedia

    en.wikipedia.org/wiki/Rotor_(electric)

    An early example of electromagnetic rotation was the first rotary machine built by Ányos Jedlik with electromagnets and a commutator, in 1826-27. [2] Other pioneers in the field of electricity include Hippolyte Pixii who built an alternating current generator in 1832, and William Ritchie's construction of an electromagnetic generator with four rotor coils, a commutator and brushes, also in 1832.

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