Generally yes. I recommend using a power supply tester- these are not expensive and readily available.
Yes. A power supply is most definitely replaceable. When replacing a power supply, make sure you know how much watts your computer requires to run. Be sure you are not buying too little "wattage" of a PSU.
Yes. A motor is considered to be a load of the power supply in use.
Armature Commutator Brushes Axle Field Magnet DC power supply
Capacitor store electrostatic energy in form of electric field.
You can purchase a variable DC power supply online from retailers such as Amazon. Once on the website, type "Variable D/C Power Supply" into the search field at the top of the page and press enter to bring up the items.
Armature Commutator Brushes Axle Field Magnet DC power supply
Armature Commutator Brushes Axle Field Magnet DC power supply
The ocz 1kw pro xstream is considered the most efficient pwer supply.
UPS = Uninterruptible Power Supply
power supply is a device that supplies electric power to electrical load
Advantage of regulated power supply.
all about regulated power supply