Question

the efficiency of every machine used by us is always equal to 100 percent true or false​

Answer 1

Answer:

Machine Efficiency

The output work is always less than the input work because some of the input work is used to overcome friction. Therefore, efficiency is always less than 100 percent. The closer to 100 percent a machine's efficiency is, the better it is at reducing friction.

Answer 2

Answer:

False

Explanation:

this is the answer