Question

steam engine converts mechanical energy into steam energy

Answer 1

Steam Engine is a machine which works on fuel as coal and on burning the fuel releases heat energy which aids in movement of engine.

Principle Of working:

converts Thermal energy into mechanical energy

working:

High pressure steam from the boiler is supplied to the steam engine cylinder through a slide valve which is also called as piston valve.

The expansion of high pressure steam moves the piston outwards , thus converting thermal energy into  mechanical energy.

The tro and fro motion of piston is converted into rotatory motion by  slider crank mechanism