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 Transport and dry the coal Air delivered by induced draft fan 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 Air delivered by induced draft fan Provide air around burners for obtaining optimum combustion ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler. Less Equal None of these More Less Equal None of these More ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The height of chimney in a power plant is governed by Limitation of construction facilities The draft to be created Quantity of flue gases to be handled Control of pollution Limitation of construction facilities The draft to be created Quantity of flue gases to be handled Control of pollution ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the Blade velocity coefficient is unity Blade solidity is 0.65 Blades are equiangular Blades are equiangular and frictionless Blade velocity coefficient is unity Blade solidity is 0.65 Blades are equiangular Blades are equiangular and frictionless ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure. None of these Lower than Higher than Equal to None of these Lower than Higher than Equal to ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For combustion of a fuel, following is essential O₂ to support combustion All the three above Proper ignition temperature Correct fuel air ratio O₂ to support combustion All the three above Proper ignition temperature Correct fuel air ratio ANSWER DOWNLOAD EXAMIANS APP
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