Discussion
In induction motor, which of the following part can be made up of cast iron?
Answer: A
The stator frame of an induction motor can be made of cast iron. The frame gives mechanical support and protection, and cast iron is cheap, strong in compression and easy to cast into a frame, while the laminated core inside carries the flux.
The stator winding and the rotor winding are made of copper or aluminium conductors, and brushes are made of carbon. So the first option is the answer.
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