Steam Boilers, Engines, Nozzles and Turbines The evaporation of 15.653 kg of water per hour from and at 100°C is called Factor of evaporation One boiler h.p. Evaporative capacity Equivalent evaporation Factor of evaporation One boiler h.p. Evaporative capacity Equivalent evaporation ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The rate of steam produced in Benson boiler is 175 tonnes/h 135 tonnes/h 250 tonnes/h 100 tonnes/h 175 tonnes/h 135 tonnes/h 250 tonnes/h 100 tonnes/h ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase Remains unchanged Decreases Increases/decreases depending on steam temperature requirements Increases Remains unchanged Decreases Increases/decreases depending on steam temperature requirements Increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure of reheat steam after passing through reheater compared to inlet condition is More Equal Less May be more or less depending on capacity of reheater More Equal Less May be more or less depending on capacity of reheater ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an impulse turbine 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 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 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An air preheater Enables low grade fuel to be burnt All of these Increases the efficiency of the boiler Increases evaporative capacity of the boiler Enables low grade fuel to be burnt All of these Increases the efficiency of the boiler Increases evaporative capacity of the boiler ANSWER DOWNLOAD EXAMIANS APP
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