Energy Creators

• Components of a DC motor?

  Circuit, magnets, electromagnets, armature, commutator, permanent magnet, and source.
• Circuit


  Used to make the whole DC motor work.
• Magnets


  Has a north/south pole. Cant be turned on/off. Opposites attract and similar repels.
• Electromagnets


  Current of wires is used to make magnetic domains of the metal line up. Can be turned on/off and needs a battery.
• Armature


  Carries electrical current in the DC motor circuit. It is what spins. Permanent magnets pushes one side of it up and other side down for it to spin.
• Brushes


  Transfer power between rotating armature coils and stationary wires.
• Commutator


  Makes sure current flows in same direction. Cuts electrical connection to stop magnets from attracting/getting stuck.
• Permanent Magnet


  Used to attract armature for it to spin.
• Source


  Where electrical energy comes from to spin motor.
• Flow of energy in a DC motor


  Power source, wire, brushes, commutator, armature, and vice versa out.
• How a DC motor works

  First - Armature spins bc of permanent magnet

  
  

  Second - When armature spins, brushes switch sides on commutator. Switches polarity of electromagnet.
• Magnetic Induction


  Movement of magnets around a coil of wire (or vice versa) to create an electrical current. Only one needs to move.
• Energy conversion of a DC motor is:

  Electrical Energy to Kinetic Energy.
• How a Generator works:

  Works same as DC Motor but armature is moved/powered by turbine instead of battery.
• Energy Conversion of Generator


  Kinetic Energy to Electrical Energy.
• What is the thing labeled "1" called?

  Source

  
• What is the thing labeled "2" called?

  Brushes

  
• What is the thing labeled "3" called?

  Commutator

  
• What is the thing labeled "4" called?

  Permanent Magnet

  
• What is the thing labeled "5" called?

  Armature

  
• Hydroelectric energy source


  What is it - Uses energy of flowing water to generate electricity using turbines.

  Pros - Renewable, can be stored, doesn't produce carbon.

  Khans - High construction cost, large land amount used, habitat downstream destroyed
• Wind


  What is it - Wind passes through turbine which produces energy.

  Pros - Renewable, efficient use of land, no carbon produced

  Khans - Can't be stored, noise pollution, hurts birds :(
• Fossil Fuels


  What is it - Carbon based fuel sources. Used to combust water and the steam turns turbines.

  Pros - High energy output, efficient use of land

  Khans - Non-renewable, produces lots of carbon
• Nuclear Energy


  What is it - Fission reaction heats water to steam which powers turbines.

  Pros - Good use of land, doesn't produce carbon.

  Khans - Non-renewable, high cost, toxic long-term waste.
• Solar


  What is it - Semi conductor absorbs protons and converts energy to electricity.

  Pros - Renewable, good use of land, no carbon produced.

  Khans - High maintenance costs, intermitted, toxic if decomissioned.