Steam Boilers, Engines, Nozzles and Turbines The friction in the nozzle __________ exit velocity of steam. Decreases Has no effect on Increases None of these Decreases Has no effect on Increases None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The cylindrical shell of a Lancashire boiler has diameter from 1.5 to 2.5 m 1.25 to 2.25 m 1.75 to 2.75 m 1 to 2 m 1.5 to 2.5 m 1.25 to 2.25 m 1.75 to 2.75 m 1 to 2 m ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which is not the correct statement about moisture in coal? It increases thermal efficiency In some coals moisture may be present up to 40% Inherent moisture and surface moisture are different things Some moisture in coal helps in better burning which is not possible with completely dry coal It increases thermal efficiency In some coals moisture may be present up to 40% Inherent moisture and surface moisture are different things Some moisture in coal helps in better burning which is not possible with completely dry coal ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an impulse turbine The steam is expanded in moving blades only The steam is expanded both in fixed and moving blades continuously The pressure and temperature of steam remains constant 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 steam is expanded both in fixed and moving blades continuously The pressure and temperature of steam remains constant The steam is expanded in nozzles only and there is a pressure drop and heat drop ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Carbonization of coal is the process of Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel Binding the pulverized coal into briquettes Heating wood in a limited supply of air at temperatures below 300°C Pulverizing coal in inert atmosphere Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel Binding the pulverized coal into briquettes Heating wood in a limited supply of air at temperatures below 300°C Pulverizing coal in inert atmosphere ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines If partial pressure of air and steam be ‘pa’ and ‘ps’ respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to ps - pa None of these pa + ps pa - ps ps - pa None of these pa + ps pa - ps ANSWER DOWNLOAD EXAMIANS APP
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