_:n1fd033fd39124299a6a5ec0abe1d7813xb2
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"&quot;Concept:\n\nImpulse Turbine:\n\nIn impulse turbine, steam coming out at a very high velocity through the fixed nozzle strikes the blades fixed on the periphery of a rotor. The blades change the direction of the steam flow without changing its pressure.\n\n\n\nImpulse-Reaction Turbine:\n\nIn an impulse reaction turbine, steam expands both in fixed and moving blades continuously as the steam passes over them. The pressure drop occurs continuously over both moving and fixed blades.\n \n\n\n\t\n\t\t\n\t\t\t\n\t\t\tImpulse turbine\n\t\t\t\n\t\t\t\n\t\t\tReaction turbine\n\t\t\t\n\t\t\n\t\t\n\t\t\t\n\t\t\tIn impulse turbine, the fluid is expanded completely in the nozzle (pressure drops and the velocity increases) and pressure remains constant during its passage though the moving blades.\n\t\t\t\n\t\t\t\n\t\t\tIn reaction turbine, the fluid is partially expanded in the fixed blades and the remaining expansion takes place in moving blades.\n\t\t\t\n\t\t\n\t\t\n\t\t\t\n\t\t\tIn impulse turbine, when the steam glides over the moving blades, the relative velocity of steam either remains constant or reduces slightly due to friction.\n\t\t\t\n\t\t\t\n\t\t\tIn reaction turbine, the steam is continuously expanding, relative velocity increases in the fixed blade.\n\t\t\t\n\t\t\n\t\t\n\t\t\t\n\t\t\tImpulse turbine has the same pressure on the two sides of the moving blades.\n\t\t\t\n\t\t\t\n\t\t\tDifferent pressure exists on the two sides of the moving blades of a reaction turbine.\n\t\t\t\n\t\t\n\t\t\n\t\t\t\n\t\t\tNumber of stages required for pressure drop is small for the same power.\n\t\t\t\n\t\t\t\n\t\t\tNumber of stages required will be less.&quot;"
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