Steam Boilers, Engines, Nozzles and Turbines Primary air is the air used to Air delivered by forced draft fan Provide air around burners for obtaining optimum combustion Transport and dry the coal Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Air delivered by forced draft fan Provide air around burners for obtaining optimum combustion Transport and dry the coal Convert CO (formed in lower zone of furnace) into CO₂ at higher zone ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Proximate analysis of fuel is determination of percentage of Higher calorific value Lower calorific value Fixed carbon, ash, volatile matter, moisture Carbon, hydrogen, nitrogen, sulphur, moisture Higher calorific value Lower calorific value Fixed carbon, ash, volatile matter, moisture Carbon, hydrogen, nitrogen, sulphur, moisture ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The reheat factor is the ratio of the Total useful heat drop to the total isentropic heat drop Cumulative heat drop to the isentropic heat drop Isentropic heat drop to the heat supplied None of these Total useful heat drop to the total isentropic heat drop Cumulative heat drop to the isentropic heat drop Isentropic heat drop to the heat supplied None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Blow off cock in a boiler is used to Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit Increase the temperature of saturated steam without raising its pressure Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit Increase the temperature of saturated steam without raising its pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The overall efficiency of thermal power plant is Carnot cycle efficiency Boiler efficiency, turbine efficiency, generator efficiency Regenerative cycle efficiency All the three above plus gas cycle efficiency Carnot cycle efficiency Boiler efficiency, turbine efficiency, generator efficiency Regenerative cycle efficiency All the three above plus gas cycle efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as Equivalent evaporation Factor of evaporation Boiler efficiency Power of a boiler Equivalent evaporation Factor of evaporation Boiler efficiency Power of a boiler ANSWER DOWNLOAD EXAMIANS APP
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