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Principles of Electromechanics

Principles of Electromechanics. Electricity  Motion Electricity  Motion: Motor Motion  Electricity : Generator  Magnetic Field & Faraday’s Law. N. S. Magnetic Field. Generation of magnetic field Permanent Magnet:

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Principles of Electromechanics

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  1. Principles of Electromechanics Electricity  Motion Electricity  Motion: Motor Motion  Electricity: Generator  Magnetic Field & Faraday’s Law

  2. N S Magnetic Field • Generation of magnetic field • Permanent Magnet: • Electric Current: using right hand rule to determine the field direction • Straight current • Current coil

  3. × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × -q V × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × I F r F Current  Motion: Current in magnetic field • Magnetic field will exert a force on a current • Magnetic field will exert a force on a moving charge

  4. × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × -q V F r Circular Motion: Plane  B Helical path: V||0 Circular path: V||=0

  5. Charges in B field: Applications Cyclotron (accelerator) Mass Spectrometer:

  6. Example: Rail Gun Acceleration: 5  106 g Final speed: 1 km/s Duration: 1 ms

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