Quote:
Originally Posted by Ether
Ke = 12/400 = 0.03
Kt = 0.4/20 = 0.02
Why are Ke and Kt not equal?
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Pin = V*I = Ke * w * I
Pout = T*w + heat = Kt * I * w + I^2 * R
Pin=Pout
Ke * w * I = Kt * I * w + I^2 * R
Therefore Ke must be larger than Kt, as some energy is lost to heat.