Steam Boilers, Engines, Nozzles and Turbines The behavior of coal in a furnace is determined by The content of ash and heating value The proximate analysis The exact analysis The content of sulphur The content of ash and heating value The proximate analysis The exact analysis The content of sulphur ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency) ηS = ηB × ηN ηS = ηN / ηB None of the listed here ηS = ηB / ηN ηS = ηB × ηN ηS = ηN / ηB None of the listed here ηS = ηB / ηN ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An air preheater Increases the efficiency of the boiler Enables low grade fuel to be burnt All of these Increases evaporative capacity of the boiler Increases the efficiency of the boiler Enables low grade fuel to be burnt All of these Increases evaporative capacity of the boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The flow through a nozzle is regarded as Isothermal flow Isentropic flow Constant pressure flow Constant volume flow Isothermal flow Isentropic flow Constant pressure flow Constant volume flow ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the useful heat drop to the isentropic heat drop is called Vacuum efficiency Nozzle efficiency Boiler efficiency Condenser efficiency Vacuum efficiency Nozzle efficiency Boiler efficiency Condenser efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Sublimation region is the region where Solid and vapor phases are in equilibrium Solid and liquid phases are in equilibrium Solid, liquid and vapor phases are in equilibrium Liquid and vapor phases are in equilibrium Solid and vapor phases are in equilibrium Solid and liquid phases are in equilibrium Solid, liquid and vapor phases are in equilibrium Liquid and vapor phases are in equilibrium ANSWER DOWNLOAD EXAMIANS APP
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