In an 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.
B. increase flux density in the air gap.
C. permit mechanical clearance.
D. avoid saturation of field.
Answer:C
In an 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. B. increase flux density in the air gap. C. permit mechanical clearance. D. avoid saturation of field.