Steam Boilers, Engines, Nozzles and Turbines The friction present between the steam and the nozzle surfaces reduces the heat drop by 10 to 15% 15 to 25% 40 to 60% 25 to 40% 10 to 15% 15 to 25% 40 to 60% 25 to 40% ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an impulse turbine, steam expands Wholly in nozzle None of these Partly in the nozzle and partly in blades Wholly in blades Wholly in nozzle None of these Partly in the nozzle and partly in blades Wholly in blades ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as Externally fired boiler Internally fired boiler Forced circulation boiler Natural circulation boiler Externally fired boiler Internally fired boiler Forced circulation boiler Natural circulation boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In designing air preheaters, the important design consideration is that Heat transfer area should be optimum Stack gases should not be cooled to the dew point Handling and maintenance should be easier Approach temperature should be as low as possible Heat transfer area should be optimum Stack gases should not be cooled to the dew point Handling and maintenance should be easier Approach temperature should be as low as possible ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Alkaline pyrogallate is used in Orsat's apparatus for absorption of N₂ CO₂ CO O₂ N₂ CO₂ CO O₂ 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 Blades are equiangular and frictionless Blade velocity coefficient is unity Blade solidity is 0.65 Blades are equiangular Blades are equiangular and frictionless Blade velocity coefficient is unity Blade solidity is 0.65 ANSWER DOWNLOAD EXAMIANS APP
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