See economic efficiency.

The degree and speed with which a market accurately incorporates information into prices.

The ratio of the output to the total input in a process.

Ratio of output to input.  See also biological efficiency; economic efficiency.

Efficacité

Efficience

Ratio of machine output and input. The efficiency is related to a certain operating point, e.g. full-load operation.

Ration of outputs to inputs. Efficiency increases when costs of inputs are reduced or value of outputs are increased.

A percentage obtained by dividing the actual power or energy by the theoretical power or energy. It represents how well the hydropower plant converts the potential energy of water into electrical energy.

1590s, "power to accomplish something," from Latin efficientia "efficient power; efficiency; influence" (from efficientem; see efficient) + -cy. In mechanics, "ratio of useful [..]

ability to accomplish a task.

The percentage of the total energy content of a power plant's fuel that is converted into electricity. The remaining energy is lost to the environment as heat.

The ratio of the useful work obtained to the energy expended. [D02695]

The application of efficiency during the project's execution phases, i.e. when its application is most appropriate. [D02696]

Obtaining the most possible satisfaction from a given amount of resources. Efficiency for our economy is achieved when we can not increase our satisfaction of wants and needs by producing more of one [..]

the rate or speed at which an interface enables a user to accurately and successfully complete a task. While faster response time is usually better, consistent response time is also important.

(see also Cost efficiency

the ratio of the output to the input of any system skillfulness in avoiding wasted time and effort; "she did the work with great efficiency" (efficient) being effective witho [..]

n. The state of possessing adequate skill or knowledge for the performance of a duty.

Definition How easily and inexpensively transactions can occur.

the ratio of cost to size of audience used to compare media vehicles, plans or schedules.

A measure of the speed at which a method performs.

Efficiency, or Heat Efficiency, is the ratio of energy output to energy input in a process. One of the most frequently encountered uses of this ratio in the gas industry is in the use of gas for power [..]

Increasing production levels with lower costs and faster times

Under the First Law of Thermodynamics, efficiency is the ratio of work or energy output to work or energy input, and cannot exceed 100 percent. Efficiency under the Second Law of Thermodynamics is determined by the ratio of the theoretical minimum energy that is required to accomplish a task relative to the energy actually consumed to accomplish th [..]

A rating on comfort equipment, similar to the miles per gallon rating on your car. The higher the rating, the more efficient the system and the lower your fuel consumption will be.

Efficiency refers to the ratio of the output to the input of any system, or skillfulness in avoiding wasted time and effort. In agriculture, efficiency can refer to the growth rate of animals per reso [..]

The ratio of a device's energy output to its energy intake.

Ratio of output power to input power of a device.

The efficiency of a motor is the ratio of mechanical output to electrical input. It represents the effectiveness with which the motor converts electrical energy into mechanical energy at the output sh [..]

The ratio between useful work performed and the energy expended in producing it. It is the ratio of output power divided by the input power.

ability of a machine to convert work input to work output; always less than 100 percent in real machines due to some loss to friction or heat; 

Achieving the results with an acceptable (reasonable) cost. For example, the success in transforming the means and activities into results and the quality of these gained results.

The ratio of the useful work output of a machine to total work input.

No machine can be 100% efficient. Efficiency is defined as 'Useful Energy Out' / 'Total Energy In'. It is a fraction, sometimes written as a percentage. For example, if an electric [..]

EM No machine can be 100% efficient. Efficiency is defined as 'Useful Energy Out' / 'Total Energy In'. It is a fraction, sometimes written as a percentage. For example, if an elec [..]

the ratio of useful energy transferred (or useful work done) by a device to the energy supplied to it

 Economic efficiency is achieved when a society produces the combination of outputs with the highest attainable total value to society, given its limited resources.  For economic efficiency to be achieved, three separate notions of efficiency need to be satisfied: allocative efficiency, productive efficiency, and distributive efficiency.

Efficiency generally refers to the degree to which operations are done in an economical manner. The Department of Energy (DOE) is the primary federal agency that deals with energy effiiciency and aims [..]

Comparison of outcomes to costs.

(n) the ratio of the output to the input of any system(n) skillfulness in avoiding wasted time and effort

The ratio of work put out by a machine to the work put into that machine; a measure of how well something gets a job done with little waste of time and energy (Lesson 18)

The ratio of energy output to energy input in a device.

 - A ratio of light emitted from a luminaire to the light produced by the bare lamp.

The percentage of electrical energy generated at a power station that is delivered to customers. Power flowing through cables and overhead conductors heats them up, causing losses. Designing of distribution system trades off the higher cost of larger cables against the cost of losses.

The ratio of output energy to input energy. Expressed as a percentage.

The percentage ratio of output to input in an a system such as an electrical device or power plant; also, energy savings created through conservation measures such as weatherization.

a narrow mathematical I concept describing the proportion of a resource that can actually be converted' into useful product or work; for example, sunlight falling on a PV module contains a given amount of energy, but the module can only convert a percentage of it into electricity.

The percentage of input power available for used by the load. The mathematical formula is: Efficiency = Po/ Pi Where “Po” equals power output, “Pi” equals power input, and power is represented by watt [..]

The ratio of output power (or energy) to input power (or energy). Expressed in percent.

effective operation as measured by a comparison of production with cost

The ratio between useful work performed and the energy expended in producing it. Ratio of output power to input power of a device.

Ratio of output power over input power expressed in percent. In motors, it is the ratio of mechanical output to electrical input indicated by a percent i.e. the effectiveness with which a motor conver [..]

the ratio of output to input (effectiveness of energy conversion).

the overall efficiency of the motor, controls, electric cables, drive train and driven equipment. This is determined by multiplying the individual component efficiencies together. 

Power out of the equipment divided by power in.

A rating on comfort equipment is similar to the miles per gallon rating on your car.

The difference between power consumed at the input of a power supply and that available at the output, usually stated in percent.

Explanation:Efficiency refers to the ratio between energy outputs and inputs. By way of illustration: conventional light bulbs convert approximately 3 – 4 % of the energy input into light, while photovoltaic systems / solar cells currently achieve an efficiency of 11 - 17 %.

Using less energy to perform the same amount of work.

A general term used to describe how effectively a heat pump, air conditioning system, or furnace converts incoming energy to outgoing energy. The higher the number, the more efficient the unit, and th [..]

Performance at specified rating conditions.

The state or quality of achieving maximum productivity with minimum wasted effort or expense. Our mechanical construction practices, geothermal technology, and innovative products deliver maximum energy efficiency and cost-­‐effective solutions.

The ratio of output to input. Volumetric efficiency of a pump is the actual output, in gpm, divided by the theoretical or design output. The overall efficiency of a hydraulic system is the output power divided by the input power. Efficiency is usually expressed as a percent.

for a turbine describes the amount of active electrical power generated as a percentage of the wind power incident on the rotor area.

the ratio of output to input. See also combustion, fuel-to-steam and thermal efficiency.

A general system performance measure defined as the ratio of system output to system input, where system input is often cost (see also effectiveness).

A percentage obtained by dividing the actual power or energy by the theoretical power or energy. It represents how well the hydropower plant converts the energy of the water into electrical energy.

Making maximum use of a resource. Requires less sacrifice than conservation, but stresses getting the most benefit out of each unit of a resource used.

The ratio of output energy to input energy, expressed in percent.

The total output power (usually in watts) divided by the input power with a given load. In equation form, percent efficiency at a specified load is: % Efficiency = (output / input) [..]

A ratio of the work or energy output over the amount of energy input.

The ratio of total output power to input power, expressed in percent. This is normally specified at full load and nominal input voltage.

The ratio of a machine’s energy output to energy input. It may be expressed as a decimal or a percent. Efficiency equals the work output divided by the work input or the actual mechanical advantage (AMA) divided by the ideal mechanical advantage (IMA).

A ratio of the input power compared to the output, usually expressed as a percentage.

A screening procedure must be brief as well as simple enough to be implemented reliably by teachers. (NRCLD)

How well energy is used to good effect

In a general sense, efficiency is the ratio of energy output to the total energy input, expressed as a percentage. In speaker systems, efficiency refers to the ratio of total acoustic watts radiated to total electrical watts input. Home speaker systems of 1% to 3% efficiency are typical, while larger horn-loaded sound reinforcement speakers sometim [..]

The ability of an audio system to convert electrical energy (watts) into mechanical energy (Decibels of acoustical energy). This ratio is usually given as the amount of energy measured in Decibels at [..]

A measure of the effective or useful output of a system compared to the input of the system.

The degree of value delivered to an audience relative to the audience that is delivered and cost. Usually expressed as either CPM (cost per thousand) or CPP (cost per gross rating point).

Similar to miles per gallon of an automobile. The rated performance.

A rating on comfort equipment, similar to the miles per gallon rating on your car. The higher the rating, the more efficient the system and the lower your fuel consumption will be.

A general term used to describe how effectively a heat pump, air conditioning system, or furnace converts incoming energy to outgoing energy. The higher the number, the more efficient the unit, and th [..]

The cooling and heating equipment rating that judges the cost-efficiency of the system.

A general term used to describe how effectively a heat pump, air conditioning system, or furnace converts energy in to energy out. The higher the number, the more efficient the unit, and the lower the [..]

The efficiency indicates how much cold or heat energy the air-conditioning system is producing from the energy used (electricity or gas). Professionals recognise the level of efficiency from the COP v [..]

A measure of the effective or useful output of a system compared to the input of the system.

A general term used to describe how effectively a heat pump, air conditioning system, or furnace converts incoming energy to outgoing energy. The higher the number, the more efficient the unit, and the lower the operating costs.

A general term for the amount of useful work per quantity of energy. See driver efficiency, fixture efficiency, LED efficiency, optical efficiency, and source efficiency.

A measure of how much energy is used to accomplish a cycle, measured by Seasonal Energy Efficiency Ratio (SEER) or Energy Efficiency Ratio (EER).  The higher the rating, the more efficient a system is [..]

is the ration of desired work-type output to the necessary energy input, in any given energy transformation devide. An efficient LIGHT bulb for example uses most of the input electrical energy to prod [..]

Ratio of output to effort, or the ratio of effort produced to energy expended.

The capacity of an Organization, institution, or business to produce desired results with a minimum expenditure of energy, Time, money, personnel, materiel, etc.

Term that denotes amount of energy delivered as a percentage of that put in. Boiler efficiency is about 65-70%; mechanical efficiency of an engine is about 90%. Steam effic­iency of engine is 20-30%. [..]

The ratio between the input fuel energy and the power produced. The total efficiency of a power plant means the amount of total fuel energy that can be converted into electricity and heat.

Ratio of output to effort, or the ratio of effort produced to energy expended.

The capacity of an organization, institution, or business to produce desired results with a minimum expenditure of energy, time, money, personnel, materiel, etc.

(see also Cost efficiency

Economically applying available resources to accomplish statutory goals as well as to improve public safety.       

The efficiency E of a computation is the speedup normalized by the number of PEs (P). It is given by   E(P) = S(P)/P

Any reference to efficiency must be accompanied by a qualifying statement which identifies the efficiency under consideration, as in the following definitions of efficiency:

Ratio of theoretical power to power actually imparted to the air or gas delivered by the compressor.

Ratio of the theoretical work (as calculated on a isothermal basis) to the actual work transferred to a gas during compression.

Ratio of power imparted to the air or gas to brake horsepower (bhp).

Ratio of the polytropic compression energy transferred to the gas, to the actual energy transferred to the gas.

Ratio of actual capacity to piston displacement.

A rating on comfort equipment, similar to the miles per gallon rating on your car. The higher the rating, the more efficient the system and the lower your fuel consumption will be.

A rating on comfort equipment is similar to the miles per gallon rating on your car.

A rating on comfort equipment, similar to the miles per gallon rating on your car. The higher the rating, the more efficient the system and the lower your fuel consumption will be.

(1) Efficiency is the ability of a device to remove particulate material from an airstream, by measuring the concentration of the particulate material upstream and downstream of the device. (2) Effici [..]

A facet or subcategory of dexterity skill. How few muscles, motions, and how little strength one can use without sacrificing the other facets of dexterity. This facet is determined by the minimum dext [..]

The ability, expressed as a percent, of a filter to remove a specified artificial contaminant at a given contaminant concentration under specified test conditions.

The relation between the useful amount of work performed by a machine and the energy expended by it during a given process.

The ratio of the number of particles retained (by the filter) to the number entering it expressed in a percentage. Electrostatic Filter

The rate at which a (heating) system maximizes fuel use. This rate is numerically described as a ratio called AFUE. As of January 1992, no furnaces can be manufactured with efficiencies lower that 78% AFUE. Boilers cannot be manufactured with efficiencies lower than 74% AFUE.

Because of futures contracts' standardization of terms, large numbers of traders from all walks of life may trade futures, thus allowing prices to be determined readily (it is more likely that so [..]

Ratio of output energy to input energy for a device. Often refers to the amount of energy lost in the form of heat during DC to AC inverter operation.

A situation in the allocation of resources where the benefits of consuming one more unit exactly equal the (social and private) costs or producing that good.

Efficiency of care is a measure of the relationship between a specific level of quality of health care provided and the resources used to provide that care. Example

Relates to avoiding waste, including waste of equipment, supplies, ideas, and energy.

Ratio of input power vs. output power.

A measure of the precision with which a statistic estimates a population parameter. Can also be used as a measure of the ability of an experimental design to detect the variables of interest.

The ratio of output power

, Refers to how cost effectively company produce and sell a product or service

ratio of energy used to energy spent: in lamps ratio of light produced to electrical power consumption, in solar cells ratio of electrical power produced to absorbed radiation power

Has several meanings. Sometimes used in a theoretical context as a synonym for Pareto efficiency. Below is the econometric/statistical definition. Efficiency is a criterion by which to compare unbiase [..]

Analysis of efficiency in the context of resource allocation has always been a central concern of economics, and it is an essential element of modern microeconomic theory. The ends of economic activit [..]

a quantity, usually expressed as a percentage, that measures the ratio of work output to work input

An idea that values the shortest distance between means and ends; the least cost for the most benefit generally understood in economic terms.

The acoustic power delivered for a given electrical input. Often expressed as decibels/watt/meter (dB/w/m). ESL – Abbreviation for electrostatic loudspeaker.

The ratio of output-signal power compared to the total input power, generally expressed as a percentage.

Means of getting the same or better service while using fewer resources.

The ability of a software system to place as few demands as possible on hardware resources, such as processor time, space occupied in internal and external memories, bandwidth used in communication de [..]

The extent to which time is well used for the intended task. ''The efficiency of the planning department is deplorable.'' *A one-room apartment. ''I have an efficiency available June through Ju [..]

A service is efficient if the available resources are used in the best possible way. (The World Bank. 2000. Key Glossary prepared as an Appendix in the Environmental Resources Management’s Strategic P [..]

means getting the most out of the resources.

In an economic sense, the ratio or proportionality between the value of the human end achieved ("benefits" or "satisfactions") and the value of the scarce resources [..]

The degree and speed with which a market accurately incorporates information into prices.

Efficiency is the amount of divisions ordered from a task. In more mathematical or scientific terms, it is a measure of the extent to which input is well used for an intended task or function (output) [..]

Efficiency is the extent to which time or effort is well used for the intended task or purpose. Efficiency may also refer to: Efficiency (aerodynamics), the amount of lift divided by the aerodynamic [..]

In the comparison of various statistical procedures, efficiency is a measure of quality of an estimator, of an experimental design, or of a hypothesis testing procedure. Essentially, a more efficient [..]

In professional basketball, the most commonly used statistical benchmark for comparing the overall value of players is called efficiency. It is a composite basketball statistic that is derived from ba [..]

In network science, the efficiency of a network is a measure of how efficiently it exchanges information. The concept of efficiency can be applied to both local and global scales in a network. On a g [..]