Correct option is A
Governing
· Governing is the process used in steam turbines to maintain a constant speed regardless of varying load conditions. It involves adjusting the flow of steam to the turbine to ensure that the turbine runs at a constant speed, which is crucial for the consistent operation of generators and other machinery connected to the turbine.
· Bleeding refers to the process of extracting steam from certain stages of the turbine for heating purposes or other applications.
· Cooling is the process of reducing the temperature of the turbine or its components.
· Reheating is the process of reheating steam after it has expanded partially in the turbine to improve efficiency.
Thus, governing is the correct term for maintaining the speed of a steam turbine constant under various load conditions.
