Question 1Electricity & Electronics - 1st Asst/Chief

The correct answer is C. The purpose of the "shaft synchro-phasing mode" is to achieve identical shaft speeds and propeller synchronization in order to minimize shaft vibration. This is accomplished by using both the respective shaft speed and shaft position sensors to ensure the propellers are rotating in sync. The other options are incorrect because: A) Vibration sensors are not used for this purpose. B) Achieving identical shaft speeds alone is not enough to minimize vibration without also synchronizing the propeller positions. D) Cavitation sensors are not involved in this process.