Steam Boilers, Engines, Nozzles and Turbines The efficiency of a boiler is defined as Ratio of the heat liberated in the furnace to the heat actually used in producing steam Ratio of the mass of steam produced to the mass of total water supplied in a given time Ratio of heat actually used in producing steam to the heat liberated in the furnace None of these Ratio of the heat liberated in the furnace to the heat actually used in producing steam Ratio of the mass of steam produced to the mass of total water supplied in a given time Ratio of heat actually used in producing steam to the heat liberated in the furnace None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades. 10 to 15% 30 to 40% 20 to 30% 15 to 20% 10 to 15% 30 to 40% 20 to 30% 15 to 20% ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler Remain unaffected First increases and then decreases Increases Decreases Remain unaffected First increases and then decreases Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines With increase in load, radiant superheater has Drooping characteristic Rising characteristic Linear characteristic Flat characteristic Drooping characteristic Rising characteristic Linear characteristic Flat characteristic ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Sulphur content of fuels is very important to the plant operators because it Retards electric precipitation Promotes complete combustion Has high heating value Has highly corrosive effect Retards electric precipitation Promotes complete combustion Has high heating value Has highly corrosive effect ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The working pressure range for a LaMont boiler is 2.5 to 15 MN/m² 1 to 15 MN/m² 3.5 to 20 MN/m² 0.5 to 10 MN/m² 2.5 to 15 MN/m² 1 to 15 MN/m² 3.5 to 20 MN/m² 0.5 to 10 MN/m² ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS