Also known as: eff.
EFF has various meanings in the Business & Finance category. Discover the full forms, definitions, and usage contexts of EFF in Business & Finance.
The ratio of output to input. Volumetric efficiency of a pump is the actual output, in gpm, divided by the theoretical or design output. Means of getting the same or better service while using fewer resources. OR The efficiency of an electrical machine or apparatus is the ratio of its useful power output to its total power input. Efficiency is the percentage of the input power that is actually converted to work output from the motor shaft.
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