Steam Boilers, Engines, Nozzles and Turbines
The selection of type and size of a steam boiler depends upon

The geographical position of the power house
The power required and working pressure
All of these
The fuel and water available

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Steam Boilers, Engines, Nozzles and Turbines
The diagram efficiency is the ratio of

Workdone on the blades to the energy supplied to the blades
Workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam
None of these
Energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam

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

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

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Steam Boilers, Engines, Nozzles and Turbines
In fire tube boilers

The flames and hot gases pass through the tubes which are surrounded by water
Water passes through the tubes which are surrounded by flames and hot gases
None of these
Forced circulation takes place

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