Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Trending News

Promoted
F
Lv 6
F asked in Science & MathematicsEngineering · 2 years ago

Thermodynamics?

A 2400 hp diesel locomotive burns 160 gals of fuel per hour. If the heat of combustion of the diesel oil used is 1.2*10^5 Btu/gal, find the efficiency of the motor.

Please show your work.

1 Answer

Relevance
  • billrussell42
    Lv 7
    2 years ago
    Favorite Answer

    2400 HP = 1790 kW

    160 gal/hr x 120000 BTU/gal•hr = 19200000 BTU/hr = 2.026e10 J/hr = 5630000 J/s = 5630000 W = 5630 kW

    efficiency = output/input = 1790 kW / 5630 kW = 0.318 or 32%

Still have questions? Get your answers by asking now.