| Which of the following statements is true concerning the operation of modern marine electric drive DC propulsion motors? |
| A) The rotor follows the frequency and phase sequence rotation of voltage applied to the motor until it reaches the desired speed. |
| B) The cycloconverter is used to increase the voltage applied to the motor until it reaches the desired speed. |
| C) The silicon-controlled rectifiers in the power converter are used to control the voltage and current applied to the motor armature. |
| D) The source and load converters respond to a small reference voltage increasing the frequency applied to the motor until it reaches the desired speed. |
