Question 216Electricity & Electronics - 1st Asst/Chief

The correct answer is C) Full line voltage is supplied to the shunt field, and reduced voltage is supplied to the series field and the armature. This is correct because when the handle of a drum-type motor controller is moved to the "start" position, the controller is designed to provide full line voltage to the shunt field, which is necessary to establish the magnetic field for the compound wound DC motor. However, the controller also reduces the voltage supplied to the series field and the armature to limit the initial starting current and torque, preventing damage to the motor. The other options are incorrect because they do not accurately describe the voltage distribution in the "start" position of the drum-type motor controller for a compound wound DC motor.