Steam Boilers, Engines, Nozzles and Turbines Pick up the wrong statement about water tube boiler in comparison to fire tube boilers Former occupies less space for same power Chances of explosion are less in former case Rate of steam flow is more in former case Former is used for high installed capacity Former occupies less space for same power Chances of explosion are less in former case Rate of steam flow is more in former case Former is used for high installed capacity 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 = 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 α₁ = β₁ and α₂= β₂ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The steam enters the nozzle at a Low pressure and a high velocity High pressure and a low velocity High pressure and a high velocity Low pressure and a low velocity Low pressure and a high velocity High pressure and a low velocity High pressure and a high velocity Low pressure and a low velocity ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of injector used in small steam plants is to Create vacuum in furnace Pump feed water Dose chemicals in feed water Create vacuum at turbine exhaust Create vacuum in furnace Pump feed water Dose chemicals in feed water Create vacuum at turbine exhaust ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for gases is 0.577 0.582 0.546 0.528 0.577 0.582 0.546 0.528 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be 160/3 m/s 320/3 m/s 640/3 m/s 640 m/s 160/3 m/s 320/3 m/s 640/3 m/s 640 m/s ANSWER DOWNLOAD EXAMIANS APP
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