Consider a shunt-connected dc motor that has the
Chapter 16, Problem P16.50(choose chapter or problem)
Consider a shunt-connected dc motor that has the magnetization curve shown in Figure 16.19 on page 778. The dc supply voltage is VT = 200 V, the armature resistance is RA = 0.085 , the field resistance is RF = 10 , and the adjustable resistance is Radj = 2.5 . At a speed of 1200 rpm, the rotational loss is Prot = 1000 W. If this motor drives a load that demands a torque of Tout = 200 Nm independent of speed, determine the motor speed and efficiency. P
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