Question 523Electricity & Electronics - Assistant Engineer

The correct answer is A) By the use of slip rings and brushes. In an azipod propulsion system, the three-phase, frequency and voltage controlled power is delivered to the synchronous propulsion motor stator windings using slip rings and brushes. This allows the power to be transmitted from the stationary part of the system to the rotating azipod unit while maintaining the necessary electrical connections. The other options are incorrect because: B) Rotary transformer action is not used in this type of system, C) The stator windings are not directly connected to the power source, and D) Commutator bars and brushes are not employed in a synchronous motor configuration like an azipod.