What is Armature Reaction in Electrical Engineering?

Armature Reaction

At No Load there is not any current flow in the Armature Winding it means Ia = 0 So MMF=NI =0 that means No Armature Flux will Generate But when the load is applied then Ia is not equal to zero and MMF Produce a flux known as Armature Flux.

Armature Reaction - 

The Effect of Armature Flux to the main field flux such that it Magnetised, Demagnetized or Cross Magnetized the Resultant flux.

Type of Armature Reaction -
In D.C. Circuit the load is only Resistive type but for A.C. Circuit the load may be Three Types.
1 - Resistive Load
2 - Inductive Load
3 - Capacitive Load

In Case of Resistive Load -
In this case, The Armature flux lag the main flux by an Angle of 90° so the Resultant flux just higher to main field flux That Phenomena is known as Cross Magnetization. 

What is Armature Reaction in Electrical Engineering?


In Case of Inductive Load -
In This case, the Armature Flux Directly Oppose the main field flux by an Angle of 180° due to this effect the Resultant flux decreases and this Phenomena is known as Demagnetization.

What is Armature Reaction in Electrical Engineering?


In Case of Capacitive Load -
In This Case, Main field flux and Armature Flux are in the same Direction due to Capacitive load the Resultant flux Increases That Phenomena is known as Magnetization.

What is Armature Reaction in Electrical Engineering?

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