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An electromechanical energy conversion device has cylindrical stator but salient pole rotor. Rotor is not excited. If δ is the angle between stator field and rotor long axis, then average torque developed is proportional to (A and B are constants).

An electromechanical energy conversion device has cylindrical stator but salient pole rotor. Rotor is not excited. If δ is the angle between stator field and rotor long axis, then average torque developed is proportional to (A and B are constants). Correct Answer Asin2δ

We know, Te = 1/8 Im2(Ld-Lq)sin2δ+1/2 IfImMmaxsinδ, rotor is not excited implies If=0, and thus Te = 1/8 Im2(Ld-Lq)sin2δ = Asin2δ.

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