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Segment 2 (Induction Motor (Reason to use it (Cheap, Rugged, Easy to…

- - - - Stationary part
      - Made by stacking thin slotted highly permeable steel lamination inside a steel or cast-iron frame
      - When 3 phase AC current passes through, it will produce a rotating magnetic field
    - - Rotating part
      - Made by packing insulated iron core lamina inside the rotor
      - Small slices of iron are used to make sure eddy current losses are minimal
      - Both magnetic field and rotor will rotate
      - Speed of the magnetic field is always higher than speed of rotor, and the difference is known as 'slip'
- - - - Produces rotating magnetic flux
      - Induces electricity in the armature coil
      - Made to rotate by a prime mover
      - Pole cores on rotor is used to transfer magnetic flux
      - Pole cores are made with fairly thick steel lamina to reduce energy loss due to eddy current
      - DC current is supplied to rotor via a pair of slip rings
    - - Fitted around the motor
      - Will generate alternating EMF across the winding
      - Stationary