Steam Boilers, Engines, Nozzles and Turbines
The reheat factor is the ratio of the

Cumulative heat drop to the isentropic heat drop
Isentropic heat drop to the heat supplied
None of these
Total useful heat drop to the total isentropic heat drop

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Steam Boilers, Engines, Nozzles and Turbines
The function of a piston in a steam engine is

To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment
To transfer motion from the piston to the cross-head
To guide motion of the piston rod and to prevent it from bending
None of these

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