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Efficiency is output power divided by input power. You somehow have to measure, calculate, or estimate both; the details will vary depending on the type of energy input and energy output.

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What is the difference between actual machanical advantage and ideal machanical advantage?

Ideal mechanical advantage is what could be obtained without the effects of gravity and friction lowering the efficiency of the machine. The actual mechanical advantage is what can actually be obtained by the machine.


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.


What is the measure of how much useful work a machine puts out compared to the amount of work put into it?

That is called the efficiency, and it is a number between 0 and 1 (or 0% and 100%). It is obtained by dividing output power / input power.


Describe why a high-efficiency machine is more desirable thana 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).


What is a machine with efficiency of less than one?

no machine has one


What is the efficiency of the machine?

a machine applies a force of 100 newtons over a distance of 10 meters to raise a500 newtons drum 1.5 meters. what is efficiency of the machine ?


How is condenser high efficiency obtained?

the high efficiency is obtained by using a larger condenser surface or by using more mordern alloys with more extended surface or fins


What is an efficiency ratio?

The efficiency ratio for a machine usually refers to the ratio of the useful energy available from a machine and the energy put into it.


What is the machine efficiency of a machine that produces 400 joules of work output from a work input of 500 joules?

The efficiency is 80%. To find the efficiency, 400/500 = 80%.


What increases as efficiency of a machine increases?

As the efficiency of a machine increases, the output of the machine for a given input also increases. This means that the machine can do more work with the same amount of energy input. Additionally, the operating costs of the machine may decrease as efficiency improves, since less energy is wasted.


What limits the efficiency of machine?

friction