Steam Boilers, Engines, Nozzles and Turbines In an impulse turbine The steam is expanded in nozzles only and there is a pressure drop and heat drop The steam is expanded in moving blades only The pressure and temperature of steam remains constant The steam is expanded both in fixed and moving blades continuously The steam is expanded in nozzles only and there is a pressure drop and heat drop The steam is expanded in moving blades only The pressure and temperature of steam remains constant The steam is expanded both in fixed and moving blades continuously ANSWER DOWNLOAD EXAMIANS APP
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 < β₁ and α₂ > β₂ α₁ = β₂ and β₁ = α₂ α₁ = α₂ and β₁ = β₂ α₁ = β₁ and α₂= β₂ α₁ < β₁ and α₂ > β₂ α₁ = β₂ and β₁ = α₂ α₁ = α₂ and β₁ = β₂ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The expansion of steam, as it flows over the blades in reaction turbine, represents Isothermal process Isentropic process Free expansion process Throttling process Isothermal process Isentropic process Free expansion process Throttling process ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In forced circulation steam boilers, the force is applied All of these To circulate water To draw water To drain off the water All of these To circulate water To draw water To drain off the water ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the volume at cut-off to the swept volume is called Clearance ratio Expansion ratio Cut-off ratio None of these Clearance ratio Expansion ratio Cut-off ratio None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for gases is 0.528 0.546 0.577 0.582 0.528 0.546 0.577 0.582 ANSWER DOWNLOAD EXAMIANS APP
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