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Engineering - Coggle Diagram

- - - - Advantages
        
        There are no fuel costs and no harmful polluting gases are produced.
        
        Solar cells can provide electricity in remote locations where there is no mains electricity.
      - Disadvantages
        
        Solar cells are expensive and inefficient, so the cost of their electricity is high.
        
        Solar cells do not work at night and not as well when it is cloudy.
  - - - Advantages
        
        Wind is a renewable energy resource. There are no fuel costs and no harmful polluting gases are produced.
      - Disadvantages
        
        Wind farms are noisy and may spoil the view for people living near them.
        
        The amount of electricity generated depends on the strength of the wind. If there is no wind, there is no electricity.
  - - - Advantages
        
        There are no fuel costs and no harmful polluting gases are produced.
        
        Very reliable and can be easily switched on.
      - Disadvantages
        
        Dams flood farmland and push people from their homes.
        
        The rotting vegetation underwater releases methane, which is a greenhouse gas.
        
        Hard to find suitable location
        
        Expensive
      - Easily adjust output
      - Safe
  - - - Advantages
        
        There are no fuel costs and no harmful polluting gases are produced.
        
        Very reliable and can be easily switched on.
        
        High energy density
        
        Predictable as it relies on the moon and sun
      - Disadvantages
        
        Tidal barrages destroy the habitats of estuary species, including wading birds.
        
        The rotting vegetation underwater releases methane, which is a greenhouse gas.
        
        Expensive to build
        
        Looks ugly to tourists
  - - - Disadvantages
        
        Cost of Production is higher
        
        Monoculture of these crops causes soil damage
        
        Require lots of land
      - Advantages
        
        Biofuels are made from many different sources such as manure, waste from crops and plants grown specifically for the fuel, sustainable
        
        Carbon Neutral, absorb the carbon they release when burnt
  - - - Advantages
        
        There are no fuel costs and no harmful polluting gases are produced.
        
        The hot water and steam can be used to heat buildings directly.
      - Disadvantages
        
        Most parts of the world do not have suitable areas where geothermal energy can be exploited.
  - - - Advantages
        
        Do not produce carbon dioxide or sulfur dioxide.
        
        Very efficent
      - Disadvantages
        
        Nuclear fuels are non-renewable energy resources. They will run out one day if we keep on using them, just will take a very long time.
        
        f there is an accident, large amounts of radioactive material could be released into the environment
- - - - AC more useful for simple products as the current switchs back and forth, bad for the circuitory
    - - Used for more complex circuits
  - - - Light
      - Sound
      - Pressure
      - Movement
      - Moisture
    - - Timers
      - Counters
      - Comparators
      - Logic Gates
      - PIC (Micro controller)
    - - Light
      - Sound
      - Movement
- - - - High Strength
        
        Mild Steel having a lower strength than Carbon Steel
      - Conductive
      - High Toughness
        
        Mild Steel having a lower toughness than Carbon Steel
      - High density
      - Mild Steels ductility is higher than Carbon Steel
        
        Mild Steel also cheaper
    - - Light Weight 1/3 of Steel density
      - Corrosion Resistance
      - Conductive
      - Good strength relative to its weight
      - Non-magnectic
      - Non-toxic
      - Ductile
  - - - Soft wood
      - Relatively Cheap
- - - - Tap and Die
      - Hacksaw