Steam Boilers, Engines, Nozzles and Turbines
In a single acting steam engine

The steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft
The steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft

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Steam Boilers, Engines, Nozzles and Turbines
A regenerative steam cycle renders

Increased thermal efficiency
Decreased work output per unit mass of steam
Decreased work output per unit mass of steam as well as increased thermal efficiency
Increased work output per unit mass of steam

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Steam Boilers, Engines, Nozzles and Turbines
The equivalent evaporation of a boiler is a measure to compare

Any type of boilers operating under any conditions
The two different boilers of the same make
The given boiler with the model
Two different makes of boilers operating under the same operating conditions

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