Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine

The expansion of steam takes place partly in the fixed blades and partly in the moving blades
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The pressure and temperature of steam remains constant

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Steam Boilers, Engines, Nozzles and Turbines
The effect of friction on the flow of steam through a nozzle is to

Increase the mass flow rate and to increase the exit temperature
Decrease the mass flow rate and to decrease the wetness of steam
Increase the exit temperature without any effect on mass flow rate
Decrease the mass flow rate and to increase the wetness of steam

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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
Pulverizing coal in inert atmosphere
Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
Binding the pulverized coal into briquettes

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