Difference Between Rotor and Armature| What is field Winding| What is Armature Winding|

Understanding the Difference Between Rotor and Armature

Introduction to Common Confusions

• The speaker, Abhishek Joshi, introduces the topic of confusion regarding whether rotor and armature are the same in electrical engineering.

• A viewer's comment prompted this discussion, specifically about field winding and armature winding in induction motors.

Clarifying Terminology

• The focus will be on three-phase induction motors to clarify terms since these can differ in generators or brushless DC motors.

• The speaker emphasizes that rotor and armature are not the same; many people mistakenly use these terms interchangeably.

Definitions of Rotor and Armature

• In a three-phase induction motor, the rotating part is called the rotor.

• Armature refers specifically to the winding on the rotor; thus, when discussing armature, it pertains to armature winding rather than just the rotor itself.

Understanding Field Winding vs. Armature Winding

• There is confusion about where field winding and armature winding are located in a three-phase induction motor.

• Field windings produce a rotating magnetic field when three-phase supply is applied at stator terminals; this is crucial for motor operation.

Induced EMF in Three-Phase Induction Motors

• Armature winding is where induced EMF occurs as the rotating magnetic field interacts with a stationary rotor.

• It’s clarified that while rotor refers to the moving part of the motor, armature specifically denotes its associated windings.

Importance of Clarity for Interviews