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How is the efficiency of a compound machine calculated?

Updated: 8/10/2023
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ArielaChavez

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12y ago

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The efficiency of a machine is found by dividing the amount of work done by a machine by the amount of energy used by a machine. The answer is then multiplied by 100 to give a percentage.

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Wiki User

9y ago
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14y ago

Work output divided by energy input = efficiency

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9y ago

You divide the useful output power by the input power.

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12y ago

(Work out / work in) * 100 = % efficiency

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Q: How is the efficiency of a compound machine calculated?
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Related questions

How is the efficiency of a machine calculated?

Efficiency = useful output power / input power


How is a machine's efficiency of a calculated?

Efficiency = useful output power / input power


Is the efficiency of a machine calculated by the ratio or by the product?

efficiency is a product of the input versus the output


How much efficiency does a compound machine have?

The decimal efficiency of each part multiplied together.


What is efficiency and how is it calculated?

The efficiency is output divided by input.


How can a machine's efficiency be calculated?

You use the definition of "efficiency": you divide output power by input power. Both of these, of course, need to be measured or calculated.


How do you calculate the efficiency of a machine?

Efficiency is nothing but calculating how the machine is performing for what it has been made for, Efficiency is usually calculated in % as (output/input )X100. for Eg. the Thermal efficiency of an reciprocating gasoline engine can be calculated as follows, Let, the input for an reciprocating engine is 12MJ and its out put is 4MJ then Efficiency is (4/12)X100 = 33%


A simple machine requires this in order to operate?

The mechanical advantage of a compound machine is the multiple of the separate mechanical advantages of each simple machine. The efficiency of the compound machine is also the multiple of the separate efficiencies of each simple machine. So the work in to the first machine multiplied by all of the simple machine efficiencies gives you the work out of the last machine


Why is the mechanical efficiency of most compound machines lower than most simple machines?

It is lower because compound machines have more moving parts that a simple machine does.


Mechanical advantage of a compound machine?

MA = Revolutions of input shaft / Revolutions of output shaft. (Input torque * MA) * efficiency = Output torque Note 100% efficiency = 1.0


Why is a high efficiency machine is more desirable than a low efficiency machine?

A high efficiency machine will produce more of what is it that you want with the same power as the low efficiency one. In other words, for a low efficiency machine do as much as a high efficiency one, you have to give it more power (energy).


The efficiency of a machine is usually expressed in?

The efficiency of a machine is usually expressed as a percentage. The ideal efficiency of a machine is 100-percent.Another AnswerThere are no units of measurement for efficiency, because you are comparing like with like: output power divided by input power.