Steam Boilers, Engines, Nozzles and Turbines
The reheat factor is the ratio of the

None of these
Isentropic heat drop to the heat supplied
Total useful heat drop to the total isentropic heat drop
Cumulative heat drop to the isentropic heat drop

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

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

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Steam Boilers, Engines, Nozzles and Turbines
In regenerative air preheaters, the heat is transferred

By direct mixing
From a metal wall from one medium to another
From heating an intermediate material and then heating the air from this material
Heat is transferred by bleeding some gas from furnace

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Steam Boilers, Engines, Nozzles and Turbines
Carbonization of coal is the process of

Heating wood in a limited supply of air at temperatures below 300°C
Binding the pulverized coal into briquettes
Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
Pulverizing coal in inert atmosphere

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