Direct water cooling of rotor winding presents_____________?
Correct answer: C. greater mechanical difficulties
- A. no mechanical difficulties
- B. lesser mechanical difficulties
- C. greater mechanical difficulties
- D. none of the above
Explanation
Water passing through a rotating rotor winding requires reliable insulation, seals, joints and rotating connections, creating greater mechanical difficulties than cooling a stationary winding. This is why direct rotor-water cooling is more complicated than direct stator cooling.
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