An armature is used as an electric motor or generator. The armature is used to communicate between two magnetic fluxes. When the armature is used as an electric motor, due to relative motion between flux produced by the field winding and the flux produced by the armature winding the EMF is induced.
What does the armature do in a motor?
In the armature, an electromotive force is created by the relative motion of the armature and the field. When the machine or motor is used as a motor, this EMF opposes the armature current, and the armature converts electrical power to mechanical power in the form of torque, and transfers it via the shaft.
Where is the armature in a motor?
A DC motor has coils of wire mounted in slots on a cylinder of ferromagnetic material, which is termed the armature. The armature is mounted on bearings and is free to rotate. It is mounted in the magnetic field produced by permanent magnets or current passing through coils of wire, which are called the field coils.
What is the difference between stator and armature?
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. … A synchronous motor is virtually identical to a synchronous generator. Thus, the armature is the stator and the field is the rotor.
What is the function of armature in electric motor Class 10?
1) Armature- Rotates when electric current is passed hence its kinetic energy can be used for various purposes. 2) Brushes- Maintains contact of the armature coil with the main circuit while rotating. 3) Split Rings- Prevents the rotation of the main circuit while the rotation of armature coil.
What is armature voltage?
Armature voltage is the voltage developed at the terminals of the armature winding of an AC or a DC machine during generation of power.
How do you test an engine armature?
The third and final test is to measure the resistance of every commutator bar to the iron armature stack. If the motor armature stack is directly pressed onto the armature shaft, you can use the armature shaft for the measurement.
How armature winding is done?
Armature winding can be defined as, an electrical machine in which emf can be generated because of the air gap field flux. It must be noted that the air gap is produced because of the DC current flow in the winding. In general, this winding is housed on slots of the stator & the field winding on rotor slots.
What does armature mean?
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.
How does an electric motor work simple?
This simple electric motor works by the magnetic force F = IL x B. … The magnetic field at both of these spots points in the same direction. Thus, the magnetic force on the wire at opposite ends of the loop points in opposite directions, causing it to spin.
What is the advantage of armature?
Rotating field is comparatively light and can run with high speed. High voltage can be generate due to high speed and there is very little difficulty in providing high voltage on a stationary part than a moving part.7 мая 2020 г.
What does armature consist of?
The armature is made up of a core, winding, commutator, and shaft. A diagram of an armature is shown below.
What is the function of stator?
In an electric motor, the stator provides a rotating magnetic field that drives the rotating armature; in a generator, the stator converts the rotating magnetic field to electric current. In fluid powered devices, the stator guides the flow of fluid to or from the rotating part of the system.
What is the principle of motor?
The principle of an electric motor is based on the current carrying conductor which produces magnetic field around it. A current carrying conductor is placed perpendicular to the magnetic field so that it experiences a force.
What is the function of commutator?
On DC and most AC motors the purpose of the commutator is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils.
What is the function of armature coil?
Armature – It is a rectangular coil that is placed in a uniform magnetic field. The main function of the armature is to rotate the shaft or axel to which it is attached.