EFFICIENCY

'Efficiency' as a technical term may refer to:

★ Energy efficiency, useful work per quantity of energy

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★ Energy conversion efficiency, desired energy output per energy input

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★ Energy conservation, reducing the use of energy

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★ Electrical efficiency, useful power output per electrical power consumed

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★ Fuel efficiency, converting energy in fuel to kinetic energy or work

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★ Specific impulse, in propulsion systems, a measure of fuel-efficiency

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★ Volumetric efficiency, in internal combustion engine design

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★ Lighting efficiency, visible light from a light source per unit of energy, in lumens per watt

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★ Mechanical efficiency, the effectiveness of a simple machine, mechanical advantage over ideal mechanical advantage

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★ Thermodynamic efficiency, useful work per change in heat

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★ Exergy efficiency, measure of 2nd-law themodynamic loss

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★ Thermal efficiency, useful work per the higher heating value of the fuel

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★ Radiation efficiency, ratio of radiated power to power absorbed at the terminals of an antenna

★ Efficiency (aerodynamics), for fixed wing aircraft the Lift-to-drag ratio

★ Efficiency (economics), a general term, to capture the amount of waste or other undesirable features

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★ Pareto efficiency, making one individual better off, without making any other individual worse off

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★ Kaldor-Hicks efficiency, like a less stringent Pareto efficiency

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★ Allocative efficiency, an optimal distribution of goods

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★ The optimisation of a social welfare function

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★ Efficiency wages, paying workers more than the market rate for increased productivity

★ Efficiency (statistics), a measure of desirability of an estimator

★ Efficiency ratio, expenses as a percentage of revenue, etc.

★ Efficiency Movement, of the Progressive Era 1890-1932, advocated efficiency in the economy, society and government

★ Material efficiency, compares material requirements between construction projects or physical processes

★ Textual efficiency, density of a message

★ Algorithmic efficiency, the speed and space requirements of a computer program

★ Quantum efficiency, a measure of sensitivity of a photosensitive device: the percentage of photons hitting the photoreactive surface that will produce an electron–hole pair

Contents

See also

See also

★ Inefficiency