Steam Boilers, Engines, Nozzles and Turbines Tertiary air is the air used to Cool the scanners Provide air around burners for obtaining optimum combustion Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Transport and dry the coal Cool the scanners Provide air around burners for obtaining optimum combustion Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Transport and dry the coal ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The steam enters the nozzle at a Low pressure and a low velocity Low pressure and a high velocity High pressure and a high velocity High pressure and a low velocity Low pressure and a low velocity Low pressure and a high velocity High pressure and a high velocity High pressure and a low velocity ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure at which latent heat of vaporisation is zero is 273 kgf/ cm² 1 kgf/ cm² 100 kgf/ cm² 225.65 kgf/ cm² 273 kgf/ cm² 1 kgf/ cm² 100 kgf/ cm² 225.65 kgf/ cm² ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The economiser is used in boilers to Economize on fuel Increase thermal efficiency of boiler Extract heat from the exhaust flue gases Increase flue gas temperature Economize on fuel Increase thermal efficiency of boiler Extract heat from the exhaust flue gases Increase flue gas temperature ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The safety valve at superheater as compared to drum safety valve setting is set at Lower value Higher value Same value Any value Lower value Higher value Same value Any value ANSWER DOWNLOAD EXAMIANS APP
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