Steam Boilers, Engines, Nozzles and Turbines 100% efficiency of a thermal cycle cannot be achieved because of It is not possible to achieve 0°K temperature Non availability of ideal substance Leakage Frictional losses It is not possible to achieve 0°K temperature Non availability of ideal substance Leakage Frictional losses ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Carbonization of coal is the process of Heating wood in a limited supply of air at temperatures below 300°C Binding the pulverized coal into briquettes Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel Pulverizing coal in inert atmosphere Heating wood in a limited supply of air at temperatures below 300°C Binding the pulverized coal into briquettes Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel Pulverizing coal in inert atmosphere ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines It is required to produce large amount of steam at low pressure. Which boiler should be used? Lancashire boiler Cochran boiler Pulverized fuel fired boiler Babcock and Wilcox boiler Lancashire boiler Cochran boiler Pulverized fuel fired boiler Babcock and Wilcox boiler 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 steam is expanded in moving blades only The pressure and temperature of steam remains constant The steam is expanded both in fixed and moving blades continuously The steam is expanded in nozzles only and there is a pressure drop and heat drop The steam is expanded in moving blades only The pressure and temperature of steam remains constant The steam is expanded both in fixed and moving blades continuously ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Tertiary air is the air used to Transport and dry the coal Cool the scanners Provide air around burners for obtaining optimum combustion Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Transport and dry the coal Cool the scanners Provide air around burners for obtaining optimum combustion Convert CO (formed in lower zone of furnace) into CO₂ at higher zone ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a throttling process Steam enthalpy remains constant Steam entropy remains constant Steam temperature remains constant Steam pressure remains constant Steam enthalpy remains constant Steam entropy remains constant Steam temperature remains constant Steam pressure remains constant ANSWER DOWNLOAD EXAMIANS APP
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