Electric Machine Rotating Actuator Problem

Discussion in 'Homework Help' started by righteous818, Apr 29, 2014.

  1. righteous818

    Thread Starter New Member

    Nov 9, 2013

    it is taken from number four. I found the current for the first part. By using

    Ampere's Circuital Law

    so i had 2Hl = Ni then found i to be 4.77 A.

    but the reluctance part i am confused from theory T = i^2 /2 dL/dtheta where L is in inductance. but i cant seem how to find inductance in terms of an angle. any guidance would be appreciated. The ans for the 2nd part are 0.919 Nm for the torque
    but i tried finding the inductance using N^2/R and R = l/uA but i cant put reluctance
    in terms of an angle