Steam Boilers, Engines, Nozzles and Turbines The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle) cot²α tan²α cos²α sin²α cot²α tan²α cos²α sin²α ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The friction in the nozzle __________ exit velocity of steam. None of these Decreases Has no effect on Increases None of these Decreases Has no effect on Increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts. and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is 0.5 0.8 0.25 0.4 0.5 0.8 0.25 0.4 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Efficiency of Rankine cycle can be increased by Decreasing exhausts pressure Increasing exhaust pressure Decreasing initial steam pressure and temperature Increasing the expansion ratio Decreasing exhausts pressure Increasing exhaust pressure Decreasing initial steam pressure and temperature Increasing the expansion ratio ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as 100°C and 1.1 bar pressure 100°C and normal atmospheric pressure 50°C and normal atmospheric pressure 50°C and 1.1 bar pressure 100°C and 1.1 bar pressure 100°C and normal atmospheric pressure 50°C and normal atmospheric pressure 50°C and 1.1 bar pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which is not correct statement about the function of furnace? To provide proper conditions for continuous complete combustion Maintain heat supply to prepare and ignite the incoming fuel Separate ash from coal Mix fuel with air and ignite To provide proper conditions for continuous complete combustion Maintain heat supply to prepare and ignite the incoming fuel Separate ash from coal Mix fuel with air and ignite ANSWER DOWNLOAD EXAMIANS APP
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