Steam Boilers, Engines, Nozzles and Turbines The friction present between the steam and the nozzle surfaces reduces the heat drop by 25 to 40% 40 to 60% 15 to 25% 10 to 15% 25 to 40% 40 to 60% 15 to 25% 10 to 15% ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which is not the correct statement about moisture in coal? It increases thermal efficiency Some moisture in coal helps in better burning which is not possible with completely dry coal Inherent moisture and surface moisture are different things In some coals moisture may be present up to 40% It increases thermal efficiency Some moisture in coal helps in better burning which is not possible with completely dry coal Inherent moisture and surface moisture are different things In some coals moisture may be present up to 40% ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The indicated thermal efficiency is defined as the Ratio of heat equivalent to indicated power to the energy supplied in steam Product of thermal efficiency and Rankine efficiency Ratio of thermal efficiency to the Rankine efficiency Ratio of brake power to the indicated power Ratio of heat equivalent to indicated power to the energy supplied in steam Product of thermal efficiency and Rankine efficiency Ratio of thermal efficiency to the Rankine efficiency Ratio of brake power to the indicated power ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Benson boiler requires No drum One drum Two drums Three drums No drum One drum Two drums Three drums ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The velocity of steam at throat of the nozzle is __________ the velocity of sound. Equal to Less than None of these More than Equal to Less than None of these More than ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For a Parson's reaction turbine, if α₁ and α₂ are fixed blade angles at inlet and exit respectively and β₁ and β₂ are the moving blade angles at entrance and exit respectively, then α₁ = β₁ and α₂= β₂ α₁ < β₁ and α₂ > β₂ α₁ = α₂ and β₁ = β₂ α₁ = β₂ and β₁ = α₂ α₁ = β₁ and α₂= β₂ α₁ < β₁ and α₂ > β₂ α₁ = α₂ and β₁ = β₂ α₁ = β₂ and β₁ = α₂ ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS