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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The basic purpose of drum in boiler is to

Separate steam from water
Serve as storage of steam
Serve as storage of feed water for water wall
Remove salts from water

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Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine, when steam flows through the moving blades,

Pressure and velocity both decreases
Pressure and velocity both increases
Pressure increases while velocity decreases
Pressure decreases while velocity increases

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Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam in a nozzle follows

Stirling cycle
Rankine cycle
Carnot cycle
Joule cycle

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the isentropic heat drop to the heat supplied, is called

Rankine efficiency
Reheat factor
Internal efficiency
Stage efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The specific heat of superheated steam in kcal/kg is generally of the order of

0.1
0.8
0.5
0.3

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Steam Boilers, Engines, Nozzles and Turbines
The radius of a dished head is taken approximately as

Two
One
One fourth
Half

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