The pressure at the outlet from the moving blades is the same as the pressure at the inlet to the moving blades in a/an __________ turbine.

In a turbine, the relationship between pressure at the inlet and outlet can vary significantly depending on the type of turbine design. In an impulse turbine, the working fluid, typically steam or water, is directed through fixed nozzles that convert pressure energy into kinetic energy. This high-speed jet then strikes the moving blades of the turbine, causing them to spin.

An important characteristic of an impulse turbine is that the pressure at the outlet from the moving blades remains equal to the pressure at the inlet to the moving blades. This is because the pressure drop occurs before the fluid reaches the blades, and once it enters the blade passage, there is no additional work done on the fluid by the blades in terms of pressure change; instead, the blades extract kinetic energy from the fluid.

This principle is contrasted with reaction turbines, where pressure drops occur not only in the nozzles but also as the fluid passes through the blades, resulting in a continuous conversion of pressure into kinetic energy throughout the turbine. Therefore, in an impulse turbine, the unchanged pressure from inlet to outlet of the moving blades is a defining feature, confirming the answer.