What is armature?
In electrical engineering, the armature is the winding (or set of windings) of an electric machine which carries alternating current. The armature can be on either the rotor (rotating part) or the stator (stationary part), depending on the type of electric machine.
What is the purpose of a armature?
The main role of an armature is multi purposed. The primary role is to transmit current across the field, therefore generating shaft torque within an active machine otherwise strength in a linear machine. The second role of an armature is to produce an EMF (electromotive force).
What is lap winding?
Lap Winding is a form of two-layer winding for electric machines in which each coil is connected in series with the one adjacent to it. lap winding is used for high current and low voltage machines.
How many types of armature winding are there?
Types of Armature Winding:
| Sr. No. | Types of Armature Winding |
|---|---|
| #1. | Single Phase and Poly Phase Armature Winding |
| #2. | Concentrated Winding and Distributed Winding |
| #3. | Lap, Wave and Concentric or Spiral Winding |
| #4. | Single Layer and Double Layer Winding |
What is the difference between armature winding and rotor winding?
The armature is the winding to which the load is connected. In small generators, the field windings are often on the stator, and the armature windings are on the rotor. Most large machines, however, have a rotating field and a stationary armature. Thus, the armature is the stator and the field is the rotor.
What is MNA and GNA?
MNA (Magnetic Neutral Axis) may be defined as the axis along which no emf is generated in the armature conductors as they move parallel to the flux lines. GNA (Geometrical Neutral Axis) may be defined as the axis which is perpendicular to the stator field axis.
What is armature and field?
Usually, the terms “armature” and “field” are applied only to alternating current generators, synchronous motors, DC motors, and DC generators. Thus, the armature is the stator and the field is the rotor. DC machines. In DC machines, both motors and generators, the armature is the rotor, and the field is the stator.