Disciplines

• Mechanical Engineering

  the study of objects and systems in motion
• Examples of mechanical engineering

  mechanics, mechatronics and robotics, thermodynamics and thermo-science
• How does mechanical Engineering help our lives?

  transportation, warm food, stay cool in hot weathers
• What is hydraulics?

  The mechanics of fluids (oil) by introducing pressure, this is done to move pistons
• Electrical engineering?

  The field concerning with electrical components within tools, appliances or equipment
• Electrical engineering affect

  computer, systems, power, telecommunications, radio, signal, electronics and optics
• Electrical engineering helps shape our world by

  transportation (electric cars), warm up food (microwave has light), easier communications, energy (wind farms) and space exploration
• What is AC?

  alternating current, flow of electrons change directions in regular Intervals
• What is DC?

  direct current, flow of electrons remains in one direction
• Which current do power stations generate only?

  AC
• Why do power stations only generate AC?

  because the transmission is more efficient and easier as transformers can simply step up and down the voltage of the alternating current.
• AC is used in some household’s applications such as?

  fans and fridges
• DC is used in household appliances such as?

  Microwaves, cellphones, light bulbs and laptops
• This is a AC symbol

  
• This is a DC symbol

  
• electronics engineering

  is the study and analysis of electrical systems and typically uses semiconductors such as silicon to speed up and control electrical current flow.