Steam Boilers, Engines, Nozzles and Turbines In a boiler, the heat is lost In moisture present in the fuel All of these To dry flue gases To steam formed by combustion of hydrogen per kg of fuel In moisture present in the fuel All of these To dry flue gases To steam formed by combustion of hydrogen per kg of fuel ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet) Vb = 0.5 V² cosα Vb = V² cos α Vb = 0.5 V cosα Vb = V cos α Vb = 0.5 V² cosα Vb = V² cos α Vb = 0.5 V cosα Vb = V cos α ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle) Vb = 0.5 V cosα Vb = V² cosα Vb = 0.5 V² cosα Vb = V cosα Vb = 0.5 V cosα Vb = V² cosα Vb = 0.5 V² cosα Vb = V cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The effect of super-saturation is that the Mass of the steam discharged increases Exit velocity of steam reduces All of these Entropy and specific volume of the steam increases Mass of the steam discharged increases Exit velocity of steam reduces All of these Entropy and specific volume of the steam increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A condenser where circulating water flows through tubes which are surrounded by steam, in known as Barometric condenser Surface condenser Evaporative condenser Jet condenser Barometric condenser Surface condenser Evaporative condenser Jet condenser ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The clearance in the engine cylinder Increases the mean effective pressure Decreases the efficiency of the engine All of these Increases the workdone Increases the mean effective pressure Decreases the efficiency of the engine All of these Increases the workdone ANSWER DOWNLOAD EXAMIANS APP
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