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In mechanical engineering, mechanical efficiency is a dimensionless ratio that measures the efficiency 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.
The mechanical efficiency of a simple machine is calculated by dividing the actual power output by the ideal power output. This is usually expressed as a percentage. Power loss in a real system can occur in many ways, such as through friction, deformation, wear, heat losses, incomplete chemical conversion, magnetic and electrical losses.
This page was last edited on 26 November 2019, at 14:14 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Acceleration – Accuracy and precision – Actual mechanical advantage – Aerodynamics – Agitator (device) – Air handler – Air conditioner – Air preheater – Allowance – American Machinists' Handbook – American Society of Mechanical Engineers – Ampere – Applied mechanics – Antifriction – Archimedes' screw – Artificial ...
The operator's efficiency is measured as the time spent producing product divided by the time the operator is on duty. [2] For example: if an operator is assigned to run a CNC machine tool for seven hours, but they only have four hours' worth of continuous uninterrupted output of workpieces—their MOE rating is 57% (4 divided by 7) for this ...
Mechanisms are mechanical devices designed to transform forces and movement into a desired set of output forces and movement. Subcategories This category has the following 25 subcategories, out of 25 total.
I would like to make some revisions to this article to make it more precise and link it to other articles on machines and efficiency. Prof McCarthy ( talk ) 23:57, 26 July 2011 (UTC) [ reply ] I tried to edit this article in a way that kept the spirit of the original material and corrected some errors, but it rapidly became redundant and awkward.
The engine has near isothermal cylinders because 1) the heater area covers the entire cylinder end, 2) it is a short stroke device, with wide shallow cylinders, yielding a high surface area to volume ratio, 3) the average thickness of the gas space is about 0.1 cm, and 4) the working fluid is Helium, a gas having good thermal properties for Stirling engines.
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