What is the meaning of armatures?
Definition of armature 1 : an organ or structure (such as teeth or thorns) for offense or defense. 2a : a piece of soft iron or steel that connects the poles of a magnet or of adjacent magnets.
What are armatures made of?
armature, in sculpture, a skeleton or framework used by an artist to support a figure being modeled in soft plastic material. An armature can be made from any material that is damp-resistant and rigid enough to hold such plastic materials as moist clay and plaster, which are applied to and shaped around it.
What is armature of a DC motor?
The armature of an electric machine is the name historically given to the winding where a voltage is induced and power transfer between electrical and mechanical systems occurs. It is a term used in dc machines and ac synchronous machines. In a dc machine, the armature is the rotating circuit.
What is GNA and MNA?
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. Brushes are always placed along the MNA because reversal of current in the armature conductors takes place along this axis.
How are armatures made?
Armature Core The core of the armature is made up of laminated thin metal plates instead of a single piece. The thickness of laminations depends on the supply frequency. It is approximately 0.5mm thick. The laminated silicon steel is used for the armature core to reduce the eddy current and hysteresis loss.
What is drum type armature?
The drum-wound armature is generally used in AC motors. It is identical to the drum winding discussed in the chapter on DC generators. Drum wound armature of dc motor.
What are armatures used for?
The armature is an integral part of the motor (or generator), as this is the component that carries the alternating current (AC) in an electric machine. The armature conducts AC, even on Direct Current (DC) machines using the commutator (which reverses current direction every so often) or due to electronic commutation.
What is armature in DC motor?
What are the types of armature windings?
Types of Armature Winding of a DC Machine – Lap Winding and Wave Winding
- Wave Winding.
- Lap Winding.
What is back EMF in motor?
Back EMF is the system in the coil of an electric motor that opposes the current flowing through the coil, when the armature rotates. When the speed varies, the winding characteristics may fluctuate, resulting in variation of back EMF.
How many types of armature 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 DC armature winding?
DC Armature. The armature of an electric machine is the name historically given to the winding where a voltage is induced and power transfer between electrical and mechanical systems occurs. It is a term used in dc machines and ac synchronous machines. In a dc machine, the armature is the rotating circuit.