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प्रश्न
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
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उत्तर
The useful work done by an actual machine is always less than the work done on the machine.
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संबंधित प्रश्न
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State if the following statement is true or false. Correct the statement if it is false.
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Machines are able to make our work convenient.
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| ______ | ______ | _______ |
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| ______ | ______ | ______ |
