Ground ambulances are generally much less expensive, with an average emergency run coming in at $800 to $2,000, depending on the region and other factors, according to J.D. Fuiten, secretary of the American Ambulance Association. During an emergency, when the aircraft show up, there's usually no mention of money.
The traditional electric motor on a diesel-electric or electric locomotive is a DC motor. Internally, DC motors have two main components: the stator is the stationary outside part of a motor. The armature is the inner part which rotates.
Steam locomotives were first developed in Great Britain during the early 19th century and dominated railway transport until the middle of the 20th century. From the early 1900s they were gradually superseded by electric and diesel locomotives. steam locomotive is normally controlled from the boiler 's backhead and the crew is usually protected from the elements by a cab. A crew of at least two people is normally required to operate a steam locomotive.