Discussion
The torque of a switched reluctance machine arises from
Answer: D
Correct answer: the tendency of the rotor to align with the excited stator poles
The rotor moves so as to minimise the reluctance of the magnetic circuit, bringing its poles into line with whichever stator poles are excited. Exciting the phases in sequence keeps the rotor chasing the alignment. No current is induced in the rotor and no magnet is involved.
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