Explanation: fe= (∂Wfld1(i,x))/∂x=(∂Wfld(i,x))/∂x. 11. The developed electromagnetic force and/or torque in electromechanical energy conversion system, acts in such a direction that tends to ___________
A. increase the stored energy at constant mmf
B. decrease the stored energy at constant mmf
C. decrease the co-energy at constant mmf
D. increase the stored energy at constant flux
Answer:A
Explanation: fe= (∂Wfld1(i,x))/∂x=(∂Wfld(i,x))/∂x. 11. The developed electromagnetic force and/or torque in electromechanical energy conversion system, acts in such a direction that tends to ___________
A. increase the stored energy at constant mmf B. decrease the stored energy at constant mmf C. decrease the co-energy at constant mmf D. increase the stored energy at constant flux
Explanation: fe=-(∂Wfld (φ,x))/∂x= -(∂Wfld (∅,x))/∂x and Te=-(∂Wfld (φ,θ))/∂θ=-(∂Wfld(∅,θ))/∂θ.