In the D.C. motor the iron losses occur in____________?
Correct answer: B. the armature
- A. the field
- B. the armature
- C. the brushes
- D. the commutator
Explanation
Iron losses are caused by alternating magnetisation of the iron core, producing hysteresis and eddy-current losses. In a DC motor, the main changing-flux iron losses occur in the rotating armature core.
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