Steam Boilers, Engines, Nozzles and Turbines
The aim of a compound steam engine is

All of these
To reduce the ratio of expansion in each cylinder
To reduce the temperature range in each cylinder
To reduce the length of stroke

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Steam Boilers, Engines, Nozzles and Turbines
In fire tube boilers

Forced circulation takes place
The flames and hot gases pass through the tubes which are surrounded by water
None of these
Water passes through the tubes which are surrounded by flames and hot gases

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