If a machine has an efficiency of 80%, it means:

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Physics · Work, Energy and Power

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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the machine loses 20% of the input energy

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Answer 1

the machine produces more output than input

Answer 2

the machine loses 20% of the input energy

Answer 3

the machine has a velocity ratio and mechanical advantage both equal to 80

Answer 4

the machine does not have any loss in input energy

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