Definitions for mechanical efficiency
me·chan·i·cal ef·fi·cien·cy

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1. Mechanical efficiency

   In mechanical engineering, mechanical efficiency is a dimensionless number that measures the effectiveness of a mechanism or machine in transforming the power input to the device to power output. A machine is a mechanical linkage in which force is applied at one point, and the force does work moving a load at another point. At any instant the power input to a machine is equal to the input force multiplied by the velocity of the input point, similarly the power output is equal to the force exerted on the load multiplied by the velocity of the load. The mechanical efficiency of a machine (often represented by the Greek letter eta η {\displaystyle \eta } ) is a dimensionless number between 0 and 1 that is the ratio between the power output of the machine and the power input η = Power output Power input {\displaystyle \eta ={\frac {\text{Power output}}{\text{Power input}}}} Since a machine does not contain a source of energy, nor can it store energy, from conservation of energy the power output of a machine can never be greater than its input, so the efficiency can never be greater than 1. All real machines lose energy to friction; the energy is dissipated as heat. Therefore their power output is less than their power input Power output = Power input − Frictional power loss {\displaystyle {\text{Power output}}={\text{Power input}}-{\text{Frictional power loss}}} Therefore the efficiency of all real machines is less than 1. A hypothetical machine without friction is called an ideal machine, such a machine would not have any energy losses, so its output power would equal its input power, and its efficiency would be 1. (100%) For hydropower turbines the efficiency is referred to as hydraulic efficiency.

WikidataRate this definition:2.4 / 8 votes

1. Mechanical efficiency

   Mechanical efficiency measures CATS the effectiveness of a machine in transforming the energy and power that is input to the device into an output force and movement. Efficiency is measured as a ratio of the measured performance to the performance of an ideal machine: Because the power transmission system or mechanism does not generate power, its ideal performance occurs when the output power equals the input power, that is when there are no losses. Real devices dissipate power through friction, part deformation and wear. The ideal transmission or mechanism has an efficiency of 100%, because there is no power loss. Real devices will have efficiencies less than 100% because rigid and frictionless systems do not exist. The power losses in a transmission or mechanism are eventually dissipated as heat.

How to pronounce mechanical efficiency?

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How to say mechanical efficiency in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of mechanical efficiency in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of mechanical efficiency in Pythagorean Numerology is: 1

Examples of mechanical efficiency in a Sentence

1. Nathaniel Dominy:

   You'd think that men would be incentivized to use the best dagger possible once their life is on the line, it provoked the question : did they differ in terms of their mechanical efficiency ?

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Mechanical_Efficiency
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=mechanical efficiency