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Early steam locomotives weighed a few tons, later locos weighed up to 100 tons, some even more.
Some of the large-wheeled steam locos could exceed 100 miles per hour on good condition track. The small-wheeled locos could not go as fast, but had more power to climb steep grades.
The front ones help guide the loco into turns, the drive wheels move the whole train, and the trailing trucks hold up the firebox. Note that slow (switchers say) locos needed only drive wheels.
A steam accumulator on some once through boilers, with no steam/water drum, is a device similar to a steam separator, which separates the steam and water before the steam is fed to the steam header.
Steam boilers create steam.
No. It utilizes steam to make it function. The boiler produces the steam.
Steam Iocomomtive Steam Iocomomtive Steam Iocomomtive
There are three kinds of steam 1) saturated steam, 2)super saturated steam 3) wet steam.
If by dry steam you mean superheated steam then dry steam because it has a higher calorific value
metal + steam = boiler
steam locomotive
There is no specific collective noun for steam engines, in which case any noun suitable for the context will work; for example a collection of steam engines, a display of steam engines, a museum of steam engines, etc.