In a synchronous machine, the stator core is made up of ______.

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PGCIL DT Electrical 5 May 2023 Official Paper
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  1. aluminium laminations
  2. copper laminations
  3. ​silicon steel laminations
  4. silver laminations

Answer (Detailed Solution Below)

Option 3 : ​silicon steel laminations
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Concept:

The main function of the stator core is to carry the alternating flux

  • In order to reduce the eddy current loss, the stator core is laminated
  • These laminated types of structures are made up of stamping which is about 0.4 to 0.5 mm thick
  • All the stampings are stamped together to form a stator core, which is then placed in the stator frame
  • The stamping is made up of silicon steel, which helps to reduce the hysteresis loss occurring in the motor and for high magnetic permeability
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