Traditional Culture Encyclopedia - Tourist attractions - What train starts with "Y"?
What train starts with "Y"?
Y means tourist train.
Introduction:
Trains, one of mankind’s modern means of transportation, are a classic example of mankind’s use of fossil energy for transportation. It refers to a vehicle running on a railway track, usually consisting of multiple carriages. The most important machine in human history, called a steam locomotive in its early days, ran on an independent track. Railway trains can be divided into freight trucks and passenger cars according to their loads. There are also mixed passenger and cargo cars that combine both.
Principle:
The bogie of the train is stuck on the track and runs along the track. When turning, the bogie rotates, allowing the train to continue running along the track. The outer rail is higher than the inner rail when turning. The original trains were pulled by ropes or horses. By the 19th century, most trains were powered by steam locomotives. After the 1940s, steam locomotives were gradually replaced by diesel locomotives that were cleaner and required less labor. Later, electric locomotives and EMUs appeared.
Expansion:
With the development of electric locomotives, in order to make them run fast and carry large loads, the voltage and power of the electric locomotive power supply system must be increased, so high voltage is required. Transmission lines and substations. In this case, the third rail on the ground can no longer be used for power supply, because it is both unsafe and inconvenient.
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