Electromagnetic generator

• • A magnetic field (stata)
  • Conductors which move inside that magnetic field (rotor)


  State the two essential parts of a generator
• Either by:

  • Rotating a multi-turn coil (rotor)in a magnet

  • Rotating the magnetic field within a set of coils (stator)

  How all generators make EMF by electro magnetic induction
• Two ends of the coils are attached to different halves of a signle split ring which co-rotates with the coil


  How to obtain DC
• Both ends of the coil are connected to separate split rings which co-rotate with the coil


  How to obtain AC
• • Flux density of the magnet
  • Length of the conductor
  • velocity (speed) of the conductor


  What does an induced EMF depend on
• $e=$$BLv$


  What is the formula for induced EMF
• • e - induced EMF in volts (V)
  • B - flux density in tesla (T)
  • L - length of conductor in meters (m)
  • v - velocity in m/s


  What does e=BLv stand for
• T=1/F


  How to find periodic time