Topic outline

  • General

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    ENROL ME IN THIS COURSE

  • Magnetism

    • common magnetic and non-magnetic materials 

    • magnetic field patterns of magnets

    • magnets attraction and repulsion when brought in contact with each other

    • practical applications of magnets

    • principle of magnetic screening (shielding) and its applications


  • Electromagnetism

    • conventions representing direction of current flow in a conductor

    • direction of force between adjacent current-carrying conductors

    • effect of current, length and distance apart on the force between conductors 

    • magnetic field around an electromagnet, a single conductor and two adjacent conductors carrying current

    • magnetomotive force (mmf) and its relationship to the number of turns in a coil and the current flowing in the coil 

    • practical applications of electromagnets

  • Magnetic circuit types

  • Methods used to reduce electrical losses in a magnetic circuit

  • Electromagnetic induction

    • principle of electromagnetic induction 

    • applications of electromagnetic induction

    • Lenz’s law

  • Magnetic devices

    • operation and application of:

    • magnetic sensing devices

    • contactors and relays

    • solenoids

    • magnetic methods used to extinguish the arc between opening contacts

  • Inductance

    • applications of the different types of inductors

    • industry standard symbols for inductors

    • types of inductor cores

    • construction of an inductor

    • definition of terms: self-induction, inductance and mutual inductance, and time constants

    • effect of physical parameters on the inductance of an inductor

    • relationship between load voltage, current and self-induced electromagnetic force in a direct current (d.c.) circuit having inductance

    • practical applications for the effects of self and mutual induction

    • undesirable effects of self and mutual induction

  • Magnetic principles and measureing instruments

  • Relevant manufacturer specifications

  • Topic 10 Generators

  • Topic 11 Motors

  • Topic 12 Efficiency