Question

what is a machine and it is defective ​

Answer 1

Machine is a man made substance which helps us to reduce the labour demand and fast the production of the industries.

Yes they can be defective but it can be repaired. But repairing is very costly.

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Answer 2

Answer:

A machine is a thing that is created by people to make work easier. It is a tool or invention which multiplies the effect of human effort. The machine produces a mechanical advantage. ... Often a machine will change one form of energy to another form of energy. Simple machines increase or change the direction of a force.