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In a 3-phase induction motor, the nLtrnher of slots on stator is not kept an exact multiple of the number of rotor slots because it | |
A. | facilitates cooling. [Wrong Answer] |
B. | avoids magnetic locking between stator field and rotor. [Correct Answer] |
C. | improves efficiency. [Wrong Answer] |
D. | improves pf. [Wrong Answer] |