Steam Boilers, Engines, Nozzles and Turbines Efficiency of Rankine cycle can be increased by Increasing the expansion ratio Decreasing initial steam pressure and temperature Decreasing exhausts pressure Increasing exhaust pressure Increasing the expansion ratio Decreasing initial steam pressure and temperature Decreasing exhausts pressure Increasing exhaust pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Calorific value of coal is of the order of 2000-4000 kcal/ kg 800-1200 kcal/ kg 5000-8000 kcal/ kg 200-400 kcal/ kg 2000-4000 kcal/ kg 800-1200 kcal/ kg 5000-8000 kcal/ kg 200-400 kcal/ kg ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The effect of friction in the nozzle ___ dryness fraction of steam. Increases Has no effect on Decreases None of the listed here Increases Has no effect on Decreases None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Boiler stays are used to Prevent flat surfaces under pressure from tearing apart Take care of failure in shear Provide support for boiler Take care of failure in compression Prevent flat surfaces under pressure from tearing apart Take care of failure in shear Provide support for boiler Take care of failure in compression ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A device used to heat feed water by utilizing the heat in me exhaust flue gases before leaving through the chimney, is known as Economizer Superheater Stop valve Fusible plug Economizer Superheater Stop valve Fusible plug ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the work-done on the blades per kg of steam to the total energy supplied per stage per kg of steam is called Blading efficiency Mechanical efficiency Nozzle efficiency Stage efficiency Blading efficiency Mechanical efficiency Nozzle efficiency Stage efficiency ANSWER DOWNLOAD EXAMIANS APP
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