FIELD THEORY
| Subject Code: | ECT1026 |
| Objective: | To provide a basic understanding of the basic laws of electrostatic and magnetostatic fields in the engineering context. |
| Pre-Requisite: | None |
| Credit Hours: | 3 |
| Contact Hours: |
53 hours (lectures,
tutorials & laboratory experiments) |
| Assessment: | Lab
Experiments: 10% Test/Quiz: 15% Tutorial/Assignment: 15% Final Examination: 60% |
| Laboratory: | 1.
Measurement of Dielectric Constant 2. Measurement on Inductance and Mutual Inductance
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| References: |
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Overview of vector algebra: addition, subtraction, scalar product and vector product. Cartesian coordinate system, cylindrical coordinate system, spherical coordinate system, conversions between coordinate systems. Integrals of scalar and vector fields.
Charge and charge density. Coulomb’s Law. Concept of fields. Electric flux density and electric field intensity. Gauss’s Theorem and applications. Voltage and electric potential. Conductor, dielectrics. Polarization, susceptibility, permittivity. Electrostatic boundary condition. Capacitance calculation and electric energy.
Current and current density. Magnetic dipoles and current loops. Magnetic flux density and magnetic field intensity. Biot-Savart Law and Ampere’s Law, Faraday’s Law. Magnetostatic boundary condition. Self and mutual induction. Inductance calculation and magnetic energy.
B and H, Magnetic materials: diamagnetic material, paramagnetic material, ferromagnetic material. Saturation and hysterisis, Hysterisis loss and eddy current loss, reluctance and permeance, Analysis of linear magnetic circuits (with air-gap problems).
Learning
Outcome of Subject
At the completion of the subject, students should be able to:
- Perform vector analysis in two and three dimensional space of Cartesian, cylindrical and spherical coordinate systems.
- Discuss the laws of electrostatics and its applications in electrical engineering such as capacitance calculation.
- Discuss the laws of magnetostatics and its applications in electrical engineering such as inductance calculation.
- Explain the properties of magnetic materials.
- Analyse magnetic circuits.
- Undertake, under supervision, laboratory experiments to measure dielectric constant of materials, capacitance and inductance of electrical circuits.
Programme Outcomes (% of contribution)
- Ability to acquire and apply fundamental principles of science and engineering. - 60%
- Capability to communicate effectively. -10%
- Acquisition of technical competence in specialized areas of engineering discipline. - 10%
- Ability to identify, formulate and model problems and find engineering solutions based on a system approach. -10%
- Ability to work effectively as an individual, and as a member/leader in a team. -10%