In direct cooled system using hydrogen both stator and rotor conductors are made____________?
Correct answer: B. hollow
- A. solid
- B. hollow
- C. perforated
- D. any ofthe above
Explanation
In direct hydrogen cooling, hydrogen must flow through the conductors to remove heat from the winding interior, so both stator and rotor conductors are made hollow. Solid conductors would only receive indirect surface cooling.
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