Question

A complex machine is made up of a number of machines.
A. True
B. False

Answer 1

Hint A complex machine is formed by connecting two or more simple machines in such a way that the new machine formed is capable of doing the desired work. It is also known as complicated machines or compound machines.

Complete step by step answer
Let us first discuss a Machine.
A machine is a device which is mechanically, electrically or electronically operated to do a specific work easily. It receives an input work and transfers this energy to perform an output work. An ideal machine can completely transfer the input work into the output work.
Machines are mainly classified into two types: Simple machines and Complex machines.
A simple machine is a device that changes the direction or magnitude of a force. In other words, they work with simple mechanisms that make use of leverage or mechanical advantage to multiply force. They have few or no moving parts to change the motion and force. There are mainly six simple machines: the inclined plane, the pulley, the lever, the wheel and axle, the screw, and the wedge.
A complex machine is formed by connecting two or more simple machines in such a way that the new machine formed is capable of doing the desired work. It is also known as complicated machines or compound machines.
Therefore we can say that a complex machine is made up of a number of machines.

Hence, option A is correct.

Note A wheelbarrow is an example of a compound machine. In a wheelbarrow, two simple machines are used: a wheel and axle is combined with that of a lever to do the work. We can form so many compound machines using the six basic simple machines. Some other examples of compound machines are a stapler, a can opener, etc.