Steam Boilers, Engines, Nozzles and Turbines The biggest size of thermal power unit operating in India is 60 MW 100 MW 500 MW 30 MW 60 MW 100 MW 500 MW 30 MW ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The economiser is used in boilers to Economize on fuel Increase flue gas temperature Extract heat from the exhaust flue gases Increase thermal efficiency of boiler Economize on fuel Increase flue gas temperature Extract heat from the exhaust flue gases Increase thermal efficiency of boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called Vacuum efficiency Nozzle efficiency Condenser efficiency Boiler efficiency Vacuum efficiency Nozzle efficiency Condenser efficiency Boiler efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The overall efficiency of thermal power plant is Boiler efficiency, turbine efficiency, generator efficiency Carnot cycle efficiency All the three above plus gas cycle efficiency Regenerative cycle efficiency Boiler efficiency, turbine efficiency, generator efficiency Carnot cycle efficiency All the three above plus gas cycle efficiency Regenerative cycle efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a reaction turbine, when steam flows through the fixed blades, Pressure and velocity both decreases Pressure and velocity both increases Pressure decreases while velocity increases Pressure increases while velocity decreases Pressure and velocity both decreases Pressure and velocity both increases Pressure decreases while velocity increases Pressure increases while velocity decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The friction present between the steam and the nozzle surfaces reduces the heat drop by 40 to 60% 25 to 40% 15 to 25% 10 to 15% 40 to 60% 25 to 40% 15 to 25% 10 to 15% ANSWER DOWNLOAD EXAMIANS APP
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