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I was reading about reaction turbines on Wikipedia, it says: "Reaction turbines develop torque by reacting to the gas or fluid's pressure or mass. The pressure of the gas or fluid changes as it passes through the turbine rotor blades."

I understand the working of impulse turbine by utilisation of kinetic energy, but this confuses me. Can anybody explain?

Kv07
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    Reaction turbines work by changing the direction of the fluid flow as it passes through the turbine, not by changing the flow velocity. Newton's 2nd law: force = rate of change or momentum. – alephzero Jul 04 '19 at 14:46
  • And how does the fluid pressure drops in a turbine? – Kv07 Jul 06 '19 at 06:57

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