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ICSE Class 6 Answered

Give reasons:

A machine cannot be 100 percent efficient.

Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
A machine cannot be 100 percent efficient because output of a machine is always less than input. A certain amount of work done on a machine is lost to overcome friction and to lift some moving parts of the machine.
Answered by | 04 Jun, 2014, 03:23: PM
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