Steam Boilers, Engines, Nozzles and Turbines A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as Economizer Air-preheater Injector Superheater Economizer Air-preheater Injector Superheater ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Thermal efficiency of well maintained boiler will be of the order 0.4 0.9 0.75 0.5 0.4 0.9 0.75 0.5 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the inlet pressure of steam is equal to the exit pressure, then There is no pressure drop and fluid does not flow through the nozzle There is a pressure drop in the nozzle Pressure drops and fluid flows through the nozzle Fluid flows through the nozzle There is no pressure drop and fluid does not flow through the nozzle There is a pressure drop in the nozzle Pressure drops and fluid flows through the nozzle Fluid flows through the nozzle ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The maximum steam pressure in a Locomotive boiler is limited to 1.8 MN/m² 180 MN/m² 0.18 MN/m² 18 MN/m² 1.8 MN/m² 180 MN/m² 0.18 MN/m² 18 MN/m² ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the Blades are equiangular Blade solidity is 0.65 Blades are equiangular and frictionless Blade velocity coefficient is unity Blades are equiangular Blade solidity is 0.65 Blades are equiangular and frictionless Blade velocity coefficient is unity ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Cut-off ratio is the ratio of Volume at cut-off to the clearance volume Clearance volume to the volume at cut-off Swept volume to the volume at cut-off Volume at cut-off to the swept volume Volume at cut-off to the clearance volume Clearance volume to the volume at cut-off Swept volume to the volume at cut-off Volume at cut-off to the swept volume ANSWER DOWNLOAD EXAMIANS APP
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