A 5 kW, 100 V DC shunt motor requires 5 V to send the rated current through the armature when it is stationary. Determine (a) the armature current that will occur when the motor is started up by the...

A 5 kW, 100 V DC shunt motor requires 5 V to send the rated current through the armature when it is stationary. Determine (a) the armature current that will occur when the motor is started up by the rated voltage and (b) the series resistor that will limit the starting current to twice the rated running value.