Question

Why different locomotives have different horsepower?

Answer 1

Depending upon the size of train different locomotives have different horsepower

Answer 2

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The EMD SD40-2 is a 3,000-horsepower (2,200 kW) C-C road switcher diesel-electric locomotive built by EMD from 1972 to 1989. The SD40-2 was introduced in January 1972 as part of EMD's Dash 2 series, competing against the GE U30C and the ALCO Century 630.

The Union Pacific locomotive, known as "Big Boy" 4014, is the largest locomotive ever constructed. It just rolled in to Southern California after a massive restoration project.

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