What is the value of 1 Horsepower?
Answer
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Hint: Try to recall when you see the specifications of a car in an advertisement, in what units is the output of the car engine measured in.
Complete answer:
In engineering and other industrial purposes and measurements, the Horsepower (hp) is used as the traditional unit of measurement of power. It is a much more convenient unit than Watt, since it has been used since the start of the Industrial revolution and more importantly, one watt is too small a unit for mainstream industrial measurements.
The value of one horsepower is approximately 746 Watt, that is,
$\text{1 hp = 746 Watt}$
Additional information:
The unit horsepower has been in use since the start of the industrial revolution. It was put to use at the start of the industrial revolution to compare the output of machines and motors (predominantly the steam engine), to the mechanical output of one draft horse, which was the main source of power for doing work in the pre- industrial era.
The horsepower has been standardized in various industries according to their main work. For example, the hydraulic horsepower calculates the value of the unit using calculations and derivations involving the hydraulic pressure of water. The most common is electrical horsepower which is equal to 746 Watt.
The output of car engines and crankshafts are often expressed in brake horsepower (bhp).
Note:
The conversion of watt to horsepower should be memorized. Many times questions specify the information about power in horsepower, while other quantities may be represented in SI units. If the conversion is not kept in mind, the student will not be able to attempt the question at all.
Complete answer:
In engineering and other industrial purposes and measurements, the Horsepower (hp) is used as the traditional unit of measurement of power. It is a much more convenient unit than Watt, since it has been used since the start of the Industrial revolution and more importantly, one watt is too small a unit for mainstream industrial measurements.
The value of one horsepower is approximately 746 Watt, that is,
$\text{1 hp = 746 Watt}$
Additional information:
The unit horsepower has been in use since the start of the industrial revolution. It was put to use at the start of the industrial revolution to compare the output of machines and motors (predominantly the steam engine), to the mechanical output of one draft horse, which was the main source of power for doing work in the pre- industrial era.
The horsepower has been standardized in various industries according to their main work. For example, the hydraulic horsepower calculates the value of the unit using calculations and derivations involving the hydraulic pressure of water. The most common is electrical horsepower which is equal to 746 Watt.
The output of car engines and crankshafts are often expressed in brake horsepower (bhp).
Note:
The conversion of watt to horsepower should be memorized. Many times questions specify the information about power in horsepower, while other quantities may be represented in SI units. If the conversion is not kept in mind, the student will not be able to attempt the question at all.
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