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In electromechanical energy conversion devices (e.g. generators and motors), a small air gap is left between the stator and the rotor in order to | |
A. | reduce the reluctance of the magnetic path [Wrong Answer] |
B. | increase flux density in the air gap. [Wrong Answer] |
C. | permit mechanical clearance. [Correct Answer] |
D. | avoid saturation of field [Wrong Answer] |