What does armature reaction do in a generator?

Definition: The armature reaction simply shows the effect of armature field on the main field. In other words, the armature reaction represents the impact of the armature flux on the main field flux.

What is an armature in a generator?

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. A synchronous motor is virtually identical to a synchronous generator.

What is the cause of armature reaction in a DC generator?

In a DC machine, the carbon brushes are always placed at the magnetic neutral axis. The armature reaction is the effect of the armature flux on the main flux. In case of a DC motor the resultant flux is strengthened at the leading pole and weakened at the trailing pole tips.

What is armature class 10th?

Armature: It is a rectangular iron core wrapped by the copper coil through which electricity passes and due to magnetic field it experiences a force and rotates. Brushes: It conducts current between stationary wires and moving parts, most commonly in a rotating shaft.

What is the purpose of an armature?

The armature’s role is twofold. The first is to carry current across the field, thus creating shaft torque in a rotating machine or force in a linear machine. The second role is to generate an electromotive force (EMF).

What is armature reaction explain various scenarios of armature reaction in synchronous generator?

As soon as current starts flowing through the armature conductor there is one reverse effect of this current on the main field flux of the alternator (or synchronous generator). In other words, the effect of armature (stator) flux on the flux produced by the rotor field poles is called armature reaction.

What is the purpose of armature?

What is armature 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 the effect of armature reaction at unity power factor?

When an alternator supplies a load at unity power factor, the effect of armature reaction is partly cross magnetizing and partly distorting. The effect of armature reaction is demagnetizing, when an alternator supplies a load at lagging power factor.