Steam Boilers, Engines, Nozzles and Turbines
Stoichiometric quantity of air is the

Air required for optimum combustion so as to have reasonable excess air
Air required for complete combustion of fuel with no excess air
Air present in atmosphere at NTP conditions
Air required to convert CO into CO₂

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Steam Boilers, Engines, Nozzles and Turbines
Pick up the wrong statement about water tube boiler in comparison to fire tube boilers

Former is used for high installed capacity
Chances of explosion are less in former case
Rate of steam flow is more in former case
Former occupies less space for same power

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