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Homework Help: Dc motor

  1. Oct 21, 2008 #1
    1. The problem statement, all variables and given/known data

    the speed of dc motor is given by N=60(A/p)(V-Ia*Ra)/(Z*phi)
    A=no. of parellel paths
    P=no of poles
    V=voltage applied at dc motor
    Ia= armature current
    Ra=armeture resistence
    Z= total no. of armature conductor
    phi=flux per conductor.
    but if some how we stop the dc motor by appling some force then "speed of it would change"? i.e. the enduced emf will change.
    is it corect???????????
    2. Relevant equations

    3. The attempt at a solution
    Last edited: Oct 21, 2008
  2. jcsd
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