The circuit in Fig. 2.134 is to control the speed of a motor such that the motor draws cur...

The circuit in Fig. 2.134 is to control the speed of a motor such that the motor draws currents 5 A, 3 A, and 1 A when the switch is at high, medium, and low positions, respectively. The motor can be modeled as a load resistance of 20 mΩ. Determine the series dropping resistances R1,R2, and R3.

Figure 2.134