Steam Boilers, Engines, Nozzles and Turbines
Pick up the wrong statement about critical condition of steam

Specific volume of steam and liquid is same
Liquid directly becomes steam
Latent heat is zero
This is the maximum pressure limit

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Steam Boilers, Engines, Nozzles and Turbines
For a Parson's reaction turbine, if α₁ and α₂ are fixed blade angles at inlet and exit respectively and β₁ and β₂ are the moving blade angles at entrance and exit respectively, then

α₁ = β₁ and α₂= β₂
α₁ = α₂ and β₁ = β₂
α₁ < β₁ and α₂ > β₂
α₁ = β₂ and β₁ = α₂

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