Question

Input is the work done_________ the machine and output is the work done____________the machine.

• A. on
• B. by

Answer 1

1. Input is the work done on the machine. In other words, it is energy given to the machine.
2. Output is the work done by the machine. In other words, it is energy given by the machine.
3. The above-discussed input and output are used to determine the efficiency of the machine.

Hence, Input is the work done on the machine and output is the work done by the machine.