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Homework Statement
A machine, with an armature resistance of 0.16 ohms and K##\phi## is to drive a load that requires a torque that is proportional to its speed. One point on the mechanical torquespeed relation is 16 Nm at 400 r/min. If the armature terminal voltage is 50 V, at what steadystate speed will the load be driven?
Homework Equations
[/B]
##T=K\phi i_a##, for a constant machine speed
The torque speed relation is
##w = \frac{V_t}{K\phi}  \frac{R_a}{(K\phi)^2}T##
The Attempt at a Solution
the only thing missing for me to use the torque speed relation is the load torque, but I don't understand what they did here to get it. I don't know what A is.
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