Question 570Steam Plants - Assistant Engineer

The correct answer is B) More oil will enter the operating cylinder (O). When there is an increase in load on a ship service generator equipped with a centrifugal type hydraulic governor, the governor weights will move outward, causing the operating piston to move upward. This upward movement of the operating piston will allow more oil to enter the operating cylinder (O), which in turn will increase the force on the valve mechanism, allowing more steam to flow to the turbine to meet the increased load demand. The other options are incorrect because: A) Steam flow to the turbine would increase, not decrease, to meet the increased load. C) The governor weights moving outward is the cause of the increased oil flow, not the result. D) The operating piston is forced to move upward, not lower, to allow more oil flow.