Steam Boilers, Engines, Nozzles and Turbines During polytropic process Steam may be wet, dry or superheated after expansion Heat transfer takes place across cylinder walls All of these Work is done Steam may be wet, dry or superheated after expansion Heat transfer takes place across cylinder walls All of these Work is done ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The change in internal energy in steam engines equals to Work done during compression Change in enthalpy Work done during the Rankine cycle Work done during adiabatic expansion Work done during compression Change in enthalpy Work done during the Rankine cycle Work done during adiabatic expansion ANSWER DOWNLOAD EXAMIANS APP
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 The reheat factor is the ratio of the Isentropic heat drop to the heat supplied Total useful heat drop to the total isentropic heat drop Cumulative heat drop to the isentropic heat drop None of these Isentropic heat drop to the heat supplied Total useful heat drop to the total isentropic heat drop Cumulative heat drop to the isentropic heat drop None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will Boil Remain as it was Flash i.e. get converted into steam Cool down Boil Remain as it was Flash i.e. get converted into steam Cool down ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The maximum steam pressure in a Locomotive boiler is limited to 180 MN/m² 1.8 MN/m² 0.18 MN/m² 18 MN/m² 180 MN/m² 1.8 MN/m² 0.18 MN/m² 18 MN/m² ANSWER DOWNLOAD EXAMIANS APP
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