armature

/'ɑ:mətjuə/
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armature

The student winds the copper wire around the iron core to build the armature.

Definition

Noun: 1. The rotating part of an electric motor or generator: In electrical engineering, an armature is the coil or winding in which an electric current is induced by its motion through a magnetic field. It is the central, moving component that converts electrical energy to mechanical energy (in a motor) or mechanical energy to electrical energy (in a generator). 2. A framework serving as a core or support: In sculpture and modeling, an armature is a rigid internal framework, often made of wire or metal, used to support the soft material (like clay or plaster) being shaped. 3. (Archaic) Defensive covering; armor: This older meaning refers to a protective covering, such as a suit of armor or a protective shell on an animal.

Usage Examples
  • Electrical Engineering:
    • The mechanic replaced the worn brushes that were in contact with the motor's armature.
    • Voltage is generated in the armature as it spins within the stator's magnetic field.
  • Art and Sculpture:
    • Before adding the clay, the artist built a sturdy wire armature to define the figure's pose.
    • A strong armature is essential to prevent a large sculpture from collapsing under its own weight.
Advanced Usage
  • "Armature reaction": In electrical machines, this refers to the effect where the magnetic field produced by the current in the armature winding distorts or weakens the main magnetic field from the field magnets.
Variants and Related Words
  • Armatured (adj): Fitted with or having an armature.
    • The armatured sculpture was ready for the application of wet clay.
  • Armature Winding (n): The specific arrangement of insulated coils that form the armature in an electrical machine.
Synonyms
  • Core (for the framework meaning).
  • Framework.
  • Structure.
  • Rotor (specifically for the rotating armature in many motors/generators).
  • Armor (for the archaic meaning).
Related Phrases
  • Armature coil: The specific loop or loops of wire within the armature.
  • Armature shaft: The central axle on which the armature rotates.
armature

The student winds the copper wire around the iron core to build the armature.

Noun
  1. coil in which voltage is induced by motion through a magnetic field

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