Steam Boilers, Engines, Nozzles and Turbines
The theoretical indicator diagram of a simple steam engine is based upon the assumption that

The expansion (or compression) of the steam is hyperbolic
All of these
Steam is admitted at boiler pressure and exhausted at condenser pressure
There is no pressure drop due to condensation

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

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

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