Steam Boilers, Engines, Nozzles and Turbines
Pick up the correct statement as regards Cornish boiler and Lancashire boiler

Lancashire has two fire tubes and Cornish has one
Cornish is fire tube and Lancashire is water tube
Cornish has two fire tubes and Lancashire has one
Cornish is water tube and Lancashire is fire tube

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

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