Steam Boilers, Engines, Nozzles and Turbines The factor of evaporation for all boilers is always Greater than unity Less than unity None of these Equal to unity Greater than unity Less than unity None of these Equal to unity ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Caking coals are those which Form lumps or masses of coke Show little or no fusing action Burn completely Burn freely Form lumps or masses of coke Show little or no fusing action Burn completely Burn freely ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A regenerative steam cycle renders Increased work output per unit mass of steam Decreased work output per unit mass of steam as well as increased thermal efficiency Decreased work output per unit mass of steam Increased thermal efficiency Increased work output per unit mass of steam Decreased work output per unit mass of steam as well as increased thermal efficiency Decreased work output per unit mass of steam Increased thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an impulse turbine The pressure and temperature of steam remains constant The steam is expanded both in fixed and moving blades continuously The steam is expanded in moving blades only The steam is expanded in nozzles only and there is a pressure drop and heat drop The pressure and temperature of steam remains constant The steam is expanded both in fixed and moving blades continuously The steam is expanded in moving blades only The steam is expanded in nozzles only and there is a pressure drop and heat drop ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle) V = 44.72 K hd V = 44.72 hd K V = 44.72 K hd V = 44.72 K hd V = 44.72 K hd V = 44.72 hd K V = 44.72 K hd V = 44.72 K hd ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Presence of moisture in fuel oil would Because sputtering, possibly extinguishing flame Keep the burner tips cool Clean the nozzles Aid in proper combustion Because sputtering, possibly extinguishing flame Keep the burner tips cool Clean the nozzles Aid in proper combustion ANSWER DOWNLOAD EXAMIANS APP
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