An electromechanical energy conversion device has cylindrical stator but salient pole rotor. If δ is the angle between stator field and rotor field, the average torque developed is proportional to (A and B are constants) __________
A. Asinδ
B. Asin2δ
C. Asinδ+Bsin2δ
D. δ
Answer:A
An electromechanical energy conversion device has cylindrical stator but salient pole rotor. If δ is the angle between stator field and rotor field, the average torque developed is proportional to (A and B are constants) __________
A. Asinδ B. Asin2δ C. Asinδ+Bsin2δ D. δ
Explanation: Te(av)= 1/8 Im2(Ld-Lq)sin2δ+1/2 IfImMmaxsinδ = Asinδ+Bsin2δ. 12. 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)