True or false: Throttle governing is used in reaction turbines.

Throttle governing is indeed used in reaction turbines. Reaction turbines operate by converting both pressure and velocity energy from the fluid into mechanical energy. In this type of turbine, throttle governing adjusts the flow rate through the turbine, allowing for control over the speed and power output.

Throttle governing accomplishes this by utilizing a variable throttle mechanism – typically a valve that can open or close to regulate fluid flow. This is crucial in maintaining optimal operating conditions and ensuring that the turbine does not exceed its design limits, thereby enhancing efficiency and safety during operation.

While impulse turbines also have their governing methods, they primarily rely on controlling the velocity of the jets impacting the turbine blades rather than altering the flow through a throttle, making throttle governing specific to reaction turbines. Thus, the statement about throttle governing being used in reaction turbines is true.