hook an electric motor to the axle
Yes, machines can transform energy from one form to another. For example, a generator can convert mechanical energy into electrical energy. Similarly, an electric motor can transform electrical energy into mechanical energy.
A generator can transform energy into electrical energy :)
It doesn't. It converts electrical energy to mechanical energy. Electricity drives the rotor which has inclined blades these move the air.
The generators transfer mechanical energy into very useful electrical energy.
Wind turbines transform the kinetic energy of the wind into mechanical energy by spinning the blades. The mechanical energy is then converted into electrical energy through a generator, which is then sent to the grid for use.
A dam does not transform mechanical energy from the motion of water into electrical energy. A turbine can convert the kinetic energy of moving water, coming from a dam, a river, or anywhere, into mechanical energy, which a generator then takes to convert that into electrical energy.
A generator transforms mechanical energy into electrical energy through the movement of a wire within a magnetic field. This causes the wire to experience a force, leading to the flow of electrons and the generation of an electric current.
You can transform thermal energy to electrical energy in a power plant, chemical energy to mechanical energy in an internal combustion engine, or nuclear energy into thermal energy in a nuclear reactor. These are just three examples.
Motors convert electrical energy to mechanical energy. Generators transfer mechanical energy to electrical energy.
Mechanical energy
Batteries transform chemical energy to electrical energy. The electrical energy is released during a chemical reaction inside the battery.
A galvanometer is an instrument that is used to measure current or voltage. It can have a mechanical movement, ie a needle that moves round a scale, or it can be digital as many are now.