Electrical engineering 1

Safety during laboratory work. DC current and voltage, resistance, power.Techniques and methods for analysis of circuits with direct current. Ideal operational amplifier with feedback. Reactive components (capacitance and inductance). Step response (on and off) for RC, RL and RLC circuits. AC current and voltage, frequency, phase, impedance and admittance.Techniques and methods for analysis of circuits with alternating current. Magnetically coupled circuits and circuits with ideal transformer. Filter and frequency characteristics. Active and reactive power. Resonance. balanced three phase circuits. Lab exercises where measuring instruments are to be used. NOTE: The course contains these topics in engineering mathematics: Complex numbers · Derivation · Integration · Linear differential equations · Setup of linear equations in matrix form.

After finishing the course, the student is to have an understanding of the fundamental electric characteristics of linear circuits. The students are to be able to construct simple circuits after the given specifications of the circuits.

KNOWLEDGE - The candidate is to understand:

- Fundamental characteristics of electrical charge, voltage, current, energy and power

- Kirchhoff's current law and Kirchhoff's voltage law

- Node analysis, mesh analysis

- Analysis techniques as superposition, Norton's theorem and Thevenin's theorem

- How simple amplifier circuits and filter circuits using operational amplifier as components are working

- The component characteristics of resistance, capacitance and inductance

- Step response in RC, RL and RLC circuits

- Modelling of impedance and admittance using calculations with complex numbers

- Modelling of AC current and AC voltage using phasors

- 1. order filter circuits, band-pass filter and band-rejection filter

- Balanced three phase systems, like the IT-system and the TN-system

- Precision and limitations of measuring instruments

SKILLS - The candidate is to be able to:

- Use network theorems, component characteristics and fundamental laws in the electric circuit theory to calculate electrical parameters in linear electrical circuits. This applies for both AC- and DC-circuits.

- Construct simple amplifier circuits and filter circuits including the use of operational amplifier

- Do calculations of voltage, current and power in balanced three phase systems

- Do calculations of electrical parameters in circuits with ideal transformers

- Do calculations of electrical parameters in circuits with magnetic coupling and mutual inductance

- Explain how the IT-system and the TN-system are different from each other

- Construct simple circuits after given specifications, be able to build them and to do measurements to verify that they work after their purpose

- Use measurement instruments for practical measuring and to trace erroneous couplings

- Take into consideration inaccuracy in measurements and use them in further calculations

GENERAL COMPETENCE - The candidate is to be able to:

- Use fundamental laws and analysis methods from this course in later parts of the candidate's study and in work situations

- Know Norwegian and English technical terms for methods/techniques, components/parameters, units of measurements etc.

- Follow security instruction for laboratory work

- Use a simulation tool for analysis of simple electrical circuits

- Report laboratory work

In the course time is set apart for lectures, exercises and laboratory work. In the online platform for the course resources that supports the teaching in the course are made available. All written obligatory work is to be delivered in the online platform of the course. It is 13-16 theoretical exercises in the course. 4 of these exercises in the autumn semester and 5 of these exercises in the spring semester must be delivered according to given deadlines and then be approved to get access to the exam in the course. It is obligatory to do all the laboratory exercises in the course and to have the journals from the laboratory exercises approved. One might be asked to write up to 2 obligatory reports from the laboratory exercises- These must be delivered according to given deadlines and be approved to gain access to the exam in the course.