Steam Boilers, Engines, Nozzles and Turbines The fire tubes in a Cochran boiler are Inclined Horizontal Vertical None of these Inclined Horizontal Vertical None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For combustion of a fuel, following is essential Correct fuel air ratio Proper ignition temperature All the three above O₂ to support combustion Correct fuel air ratio Proper ignition temperature All the three above O₂ to support combustion ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines With increase in load, radiant superheater has Rising characteristic Drooping characteristic Linear characteristic Flat characteristic Rising characteristic Drooping characteristic Linear characteristic Flat characteristic ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Calorific value of coal is of the order of 200-400 kcal/ kg 5000-8000 kcal/ kg 2000-4000 kcal/ kg 800-1200 kcal/ kg 200-400 kcal/ kg 5000-8000 kcal/ kg 2000-4000 kcal/ kg 800-1200 kcal/ kg ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Secondary air is the air used to Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Air delivered by induced draft fan Transport and dry the coal Provide air around burners for obtaining optimum combustion Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Air delivered by induced draft fan Transport and dry the coal Provide air around burners for obtaining optimum combustion ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The maximum discharge through a chimney occurs when the height of chimney is Outside temperature is very low Around 200 meters Infinitely long Equal to the height of the hot gas column producing draught Outside temperature is very low Around 200 meters Infinitely long Equal to the height of the hot gas column producing draught ANSWER DOWNLOAD EXAMIANS APP
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