Question

A machine is said to have low efficiency if it experiences a lot of energy loss to heat. How can a machine be made more efficient?

by increasing gravity

by increasing electrical energy

by reducing magnetic energy

by reducing friction

Answer 1

by reducing friction

Step-by-step explanation:

By reducing friction, a machine can be made more efficient. Friction causes energy loss in a machine, which reduces its efficiency. By reducing friction, less energy is wasted as heat, and more energy is utilized for the intended purpose of the machine.