In thermodynamics, motive power is an agency, as water or steam, used to impart motion. Motive power is generally defined as a natural force, such as water , steam, wind, electricity, etc., used to impart movement to the machinery; a motor; a mover.
Motive power can be defined as a natural agent that can be classified as water, steam, wind, or electricity. It is used to transmit motion to machinery such as an engine. Besides that, it also can be locomotives or a motor, which can provide motive power to a system. There are three (3) types of motive power which is steam, diesel and electricity.
Since long ago since the history of the train, trains are being pulled by the locomotive in the front of the train line. The head of the train acts as the prime mover and distributing the kinetic energy to the driving wheels below. Starting as steam-powered locomotives using coal, they varied to diesel and electric.
As technology evolves, engineers and scientists around the globe improved the motive power of the train. Even nowadays we can see that there are diesel-electric motive power combined, to deliver the power of the diesel-engine horsepower (hp) and to save the cost and the smoke emission of the engine. Besides electric trains, the latest technology for rail transport is magnetic levitation or also known as maglev.