can be efficiency 100%???
answer is no but efficiency of hairdresser and electric heter is 100% how and why????
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efficiency can never be 100% because of friction factors and also the use ofuseless metals that make efficiency low
now the only few machines that friction does not bother are hair dresses that is why they have an efficiency of 100% and electric heters dont have useless metals to make there efficiency low and also they are not affected by friction factor
hence100% efficiency
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