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DIN 66036 defines one metric horsepower (Pferdestärke, or PS) as the power to raise a mass of 75 kilograms against the Earth's gravitational force over a distance of one metre in one second: [17] 75 kg × 9.80665 m/s 2 × 1 m / 1 s = 75 kgf⋅m/s = 1 PS. This is equivalent to 735.49875 W, or 98.6% of an imperial horsepower.
The dimension of power is energy divided by time. In the International System of Units (SI), the unit of power is the watt (W), which is equal to one joule per second. Other common and traditional measures are horsepower (hp), comparing to the power of a horse; one mechanical horsepower equals about 745.7 watts.
1.1 × 10 3 W tech: power of a microwave oven: 1.366 × 10 3 W astro: power per square meter received from the Sun at the Earth's orbit: 1.5 × 10 3 W tech: legal limit of power output of an amateur radio station in the United States up to 2 × 10 3 W biomed: approximate short-time power output of sprinting professional cyclists and ...
Tractive effort/force Power Notes Image 2ЭС10 with 2ЭС10С unit: Russian Railways — Ural Locomotives: 2014–present Electric 3×Bo'Bo' 300 tonnes (331 short tons) 1,176 kilonewtons (264,375 lbf) 13,200 kilowatts (17,701 hp) 1-hour rating Three sections modification of 2ES10. 4ЭС5К Russian Railways — Novocherkassk Electric Locomotive ...
Engine power is the power that an engine can develop. It can be expressed in power units, most commonly kilowatt, metric horsepower (often abbreviated PS), or horsepower.In terms of internal combustion engines, the engine power usually describes the rated power, which is a power output that the engine can maintain over a long period of time according to a certain testing method, for example ...
1 PSh = 0.73549875 kW⋅h = 2647.7955 kJ (exactly by definition) The horsepower-hour is still used in the railroad industry when sharing motive power (locomotives). For example, if Railroad A borrows a 2,500 horsepower locomotive from Railroad B and operates it for twelve hours, Railroad A owes a debt of (2,500 hp × 12 h) 30,000 hp⋅h.
Now, if this motor is fed with current of 2 A and assuming that back-EMF is exactly 2 V, it is rotating at 7200 rpm and the mechanical power is 4 W, and the force on rotor is = N or 0.0053 N. The torque on shaft is 0.0053 N⋅m at 2 A because of the assumed radius of the rotor (exactly 1 m).
1.1 kW (1.5 hp; 1.5 PS) First production car [57] Peugeot Type 15: 1897 6 kW (8 hp; 8 PS) Peugeot's first in-house engine [58] Daimler Phoenix 1899 17 kW (23 hp; 23 PS) First four-cylinder road car [59] Mercedes 35 HP: 1901 26 kW (35 hp; 35 PS) Originally designed as a race car, developed for road use [60] Mercedes Simplex: 1902