Question 216Electricity/Electronics - 1st Asst/Chief70% to pass
Which of the following describes the action when the handle is moved to the "start" position of a drum-type motor controller used with a compound wound DC motor?
AI Explanation
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.
Related Questions
#214 Assuming that the motor is capable of running with no rotor slip, what type of motor would be used in an AC propulsion drive system? #215 What statement is TRUE concerning the Azipod propulsion system? #217 As shown in figure "B" of the illustration, what statement is true concerning "regenerating" operation? Illustration EL-0162 #218 With an AC synchronous electric propulsion motor driving a fixed-pitch propeller, whenever there is a direction reversal ordered from the bridge, there is a process of regenerative braking that is used to slow the motor down before the shaft actually reverses. Where is the energy associated with the inertia of rotation dissipated before reversal occurs? #219 With an AC synchronous electric propulsion motor driving a fixed-pitch propeller, whenever there is a direction reversal ordered from the bridge, there is a process of electrical braking used to slow the motor down before the shaft actually reverses. What is the name of this process?