what is steam engine?how does it work and how effect is it?could somebody help me with this stupid question?please

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what is steam engine?how does it work and how effect is it?could somebody help me with this stupid question?please
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what is steam engine?how does it work and how effect is it?could somebody help me with this stupid question?please
what is steam engine?how does it work and how effect is it?
could somebody help me with this stupid question?please

what is steam engine?how does it work and how effect is it?could somebody help me with this stupid question?please
The steam engine is the steam energy is converted to mechanical work of the reciprocating power machinery.
Steam in the steam engine piston according to one or both sides of the work, the role can be divided into single-and double-action; press cylinder layout can be divided into neutral and horizontal; by steam in a cylinder in the expansion or turn the cylinder in a number of consecutive in the expansion can be divided into single-expansion-type and multi-expansion type; according to the flow of steam in the cylinder can be divided into back-type and single-flow; by exhaust means and exhaust steam pressure can be divided into condensing steam, atmospheric type and back pressure.

The steam engine is a machine, it is driven by steam expansion of the volume and then the operation of the machine, the stupid question it is .......