UEEEL0021 - Solve problems in magnetic and electromagnetic devices
Nominal hours
Location
Prerequisites
UEECD0043 - Solve problems in direct current circuits; or
UEECD0044 - Solve problems in multiple path circuits
UEECD0046 - Solve problems in single path circuits
(Or equivalent to be determined by unit coordinator)
Co-requisites
(Corequisite units must be studied concurrently with this unit)
Overview
This unit involves the skills and knowledge required to determine correct operation of electromagnetic devices and related circuits and provide solutions as they apply to electrical installations and equipment.
It includes working safely; applying power circuit problem-solving processes, including the use of testing and measuring devices; and providing solutions derived from measurements and calculations to predictable problems in electromagnetic devices and related circuits.The skills and knowledge described in this unit require a licence or permit to practice in the workplace where work is carried out on electrical installations which are designed to operate at voltages greater than 50 volt (V) alternating current (a.c.) or 120 V direct current (d.c.).
Assessment
For Melbourne campuses
Assessment tasks will be designed to reinforce & extend knowledge and skill competence within set & controlled parameters in accordance with each unit’s learning outcomes & performance criteria requirements, incl the setting of work based practical application tasks designed to provide evidence of competence outcomes, within periodic and scheduled timelines.
Students will be expected to demonstrate the following required skills:
*applying work health and safety (WHS)/occupational health and safety (OHS) requirements, including:
*identifying hazards and assessing risks and applying control measures
*confirming isolation of circuits
*using methodological techniques to solve problems in circuits with an electromagnetic device from measured and calculated values
*determining the operating parameters of an existing circuit with an electromagnetic device, including:
*the direction of magnetic field around a current-carrying conductor and a coil
*a current-carrying conductor under the influence of a magnetic field
*modifying an existing circuit with an electromagnetic device to comply with specified operating parameters
*connecting electromagnetic devices to comply with a specified function and operating parameters
*completing work and documenting activities.
Students will also be expected to demonstrate the following knowledge:
*magnetism, including:
*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, including:
*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 and associated terminology
*methods used to reduce electrical losses in a magnetic circuit
*electromagnetic induction, including:
*principle of electromagnetic induction
applications of electromagnetic induction
*Lenz’s law
*inductance, including:
*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 in measurement instruments
*magnetic devices, including:
*operation and application of:
*magnetic sensing devices
*contactors and relays
*solenoids
*magnetic methods used to extinguish the arc between opening contacts
*relevant manufacturer specifications
Required reading
The qualified trainer and assessor will provide teaching and learning materials as required in the form of workbooks produced by Victoria University and/or via the Victoria University e-learning system.
As part of a course
This unit is studied as part of the following course(s):