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Course work help

Daniel S Robinson
Hi

I was wondering if some one could help me with my assignment.

Normally I wouldn't ask but I'm struggling to find a formula

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I'm stuck on the 1st question, I have found two formulas   I= Tω/V   and  Ea = 2πNT/Ia   re aranged   Ia = 2πNT/Ea

Both give different answers and don't take into account the back EMF.


Can any one give me some pointers please. I have looked through all my books but can't find any answers.

Any help would be appreciated.

Thank You

Daniel Robinson


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  • 0
    I have just noticed the when we consider Eb=Ia X Ra, Ia X Ra is like Ohms' Law where V=I X R.


    So if Ia and Ra are concerned with the armature values they may help us to understand more.


    So, we are saying that Eb = Ia X Ra, or that back E.M.F. is supply Voltage minus armature Voltage.


    Z.
Reply
  • 0
    I have just noticed the when we consider Eb=Ia X Ra, Ia X Ra is like Ohms' Law where V=I X R.


    So if Ia and Ra are concerned with the armature values they may help us to understand more.


    So, we are saying that Eb = Ia X Ra, or that back E.M.F. is supply Voltage minus armature Voltage.


    Z.
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