Steam Boilers, Engines, Nozzles and Turbines During polytropic process Heat transfer takes place across cylinder walls Steam may be wet, dry or superheated after expansion Work is done All of these Heat transfer takes place across cylinder walls Steam may be wet, dry or superheated after expansion Work is done All of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of injector used in small steam plants is to Create vacuum at turbine exhaust Pump feed water Create vacuum in furnace Dose chemicals in feed water Create vacuum at turbine exhaust Pump feed water Create vacuum in furnace Dose chemicals in feed water ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The average operating pressure of Benson boiler is 100 bar 250 bar 200 bar 150 bar 100 bar 250 bar 200 bar 150 bar 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 = β₂ and β₁ = α₂ α₁ < β₁ and α₂ > β₂ α₁ = α₂ and β₁ = β₂ α₁ = β₁ and α₂= β₂ α₁ = β₂ and β₁ = α₂ α₁ < β₁ and α₂ > β₂ α₁ = α₂ and β₁ = β₂ α₁ = β₁ and α₂= β₂ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The flow through a nozzle is regarded as Isothermal flow Isentropic flow Constant volume flow Constant pressure flow Isothermal flow Isentropic flow Constant volume flow Constant pressure flow ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure. Equal to Less than None of these Higher than Equal to Less than None of these Higher than ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS