Question 561Electricity & Electronics - Assistant Engineer

The correct answer is D) synchroconverter. A synchroconverter is an electric propulsion system converter that uses synchronous motors to convert AC power to DC power for propulsion. This type of converter is commonly used in Coast Guard and maritime applications to power electric propulsion systems. The other answer choices are not correct because: A) A cycloconverter is used to convert AC power to AC power at a different frequency, not for DC propulsion. B) Pulse width modulation converters are used for variable speed AC motor control, not DC propulsion. C) Controlled rectifier converters convert AC to DC, but do not use synchronous motors like a synchroconverter.