B.P.S.C. CDPO (Pre) 2005
How does a steam engine work?
aFrom water
bFrom heat✓ Correct
cFrom sound
dFrom oil
Explanation
A steam engine is a type of heat engine, which is used to perform mechanical work using steam (heat). Steam engines are mostly external combustion engines. The Rankine cycle is used in a steam engine. The steam engine was invented by James Watt.
general-science