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The efficiency is always less than one because some of the energy is always useless for what you want. Most wasted energy eventually turns into heat. therefore the efficiency is like a percentage with 1 being 100% a device can't be 100% efficient as some energy is wasted.

To work out the efficiency of a device you need to do the total useful energy produced divided by the total energy that is inputted into the device

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โˆ™ 2011-03-13 19:19:01
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Shaikh Zoha

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โˆ™ 2021-10-21 19:04:28

Less than 1

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Q: Why is it that efficiency of a machine is less than 1?
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Why is the efficiency of a machine less than 1?

An efficiency factor of 1 (or 100% efficiency) is not possible due to losses that cannot be reduced to zero. These losses take the form of friction, heat loss etc.


Describe why a high-efficiency machine is more desirable than a low-efficiency machine?

Efficiency is the ratio of the energy converted into useful work by the machine to the energy supplied to the machine. Certainly it will not be possible to convert all the energy supplied into useful work because of wastage of energy due to so many reasons. So efficiency will be always less than 1. As the efficiency becomes more the loss would become less. Hence it is desirable.


How does effieciency of the machine affects it's performance?

if a machine is not efficient, it cannot fully utilise its performance. actual performance = efficiency x possible performance efficiency = actual performance / possible performance efficiency is always a decimal number less than 1, as no machine is perfect in terms of efficiency


Explain how the efficiency of an ideal machine compares with the efficiency of a real machine?

Efficiency is equal to the ratio of work input to work output; for an ideal machine this ratio is equal to 1 or 100%. For a real machine this ratio is always less than 1 because some of the work input is used to overcome mechanical friction within the machine which does not contribute to the work output of the machine.


How do you prove that the efficiency C arnot is greater than 1?

You don't. Such an efficiency can be less than 1, but it can't be greater than 1.


In a practical machine is the power output the same as the power input?

In any practical machine, the power output is less than the power input. In other words, the efficiency of real machines is less than 1.smaller thanalways


In a machine work output is less than work input because some energy is converted into thermal energy?

Yes some energy is lost in the form of heat and so the efficiency of the machine is always less than 1 ie 100%


In a machine is work output less than work input because some energy is converted into thermal energy?

Yes some energy is lost in the form of heat and so the efficiency of the machine is always less than 1 ie 100%


In a machine work output is less than work input because some energy is converted into thermal energy.?

Yes some energy is lost in the form of heat and so the efficiency of the machine is always less than 1 ie 100%


In a machine work output is less than work input because some energy is converted in thermal energy?

Yes some energy is lost in the form of heat and so the efficiency of the machine is always less than 1 ie 100%


What is efficiency always less than?

It is always less than 1 or 100%.It is always less than 1 or 100%.It is always less than 1 or 100%.It is always less than 1 or 100%.


Is a ideal machine has an efficiency of less than one equal to one greater than one?

ideal machines have mechanical efficeincy equal to 1 (100% efficient) since efficiency is the ratio of the power output to the power input

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