Moving water can turn a water mill which can grind corn, cut wood or even pump water.
Moving water can also spin electricity turbines and generate electricity in hydroelectric dams, or in rivers and tidal races.
Water is a power supply because it is used in power plants. The water is inside the boiler and the boiler is heated to make the water turn into steam. The steam is what makes the power.
Steam engines, water wheels, etc.
The raw water reservoir in a thermal power plant is used to store large quantities of water that will be used for cooling purposes in the power plant's condenser. This water is typically drawn from a natural water source like a river or lake and needs to be stored in order to ensure a constant and reliable supply for the plant's operations.
No because they have different connectors.
The type of power supply being used (AC or DC) should match the power requirements of the device it will be supplying power to.
computer
it is used to supply power to motherboard and other peripherals
Your battery.
Yes. A Cat-5 line can be used to supply power to certain Ethernet Switches that support POE, or Power Over Ethernet.
NOT if your on a water supply dependent on electrical power for a water booster pump
The best power supply I've used is the Hurricane digital power supply, it has many features my favorite being that it remembers your last settings.
Plentiful supply of water power.