A machine can not be made with 100 % efficiency.

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Solution

A machine can not be 100 % efficient because its output is always less than its input.
A certain amount of work done on the machine is lost in overcoming friction and lifting some of the moving parts of the machine.
Hence, a machine can not be made with 100 % efficiency.

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Similar questions

Define the term efficiency of a machine. Give two reasons for a machine not to be $100 %$ efficient?

Select the incorrect statement :

(a) A machine always has the efficiency less than $100 %$ .

(b) The mechanical advantage of a machine can be less than 1.

(d) A machine can have the mechanical advantage greater than the velocity ratio.

A machine having 100% efficiency is known as an __________ machine.

A machine is, not 100% efficient because :

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