Question 92Gas Turbine - Assistant Engineer

The correct answer is B) Locked train. In a locked train main reduction gear arrangement, the pinions are prevented from independent axial and rotational movement. This is achieved by locking the pinions together, which ensures that all the pinions rotate in unison and prevents them from moving axially. This type of arrangement is commonly used in marine applications to provide a robust and reliable power transmission system. The other options are incorrect because: A) Independent suspension does not prevent independent axial and rotational movement of the pinions. C) Unlocked train arrangement allows for independent axial and rotational movement of the pinions. D) Hydraulic suspension is a type of suspension system, not a main reduction gear arrangement.