Electrical Circuit Elements and Laws Quiz

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Mathematically, it is expressed as V=IR, where V is the voltage, I is the current, and R is the resistance. An example problem could be: If a resistor has a value of 10 ohms and a current of 2A flows through it, what is the voltage across the resistor? (V=IR, V=10*2, V=20V).

In a series circuit, the components are connected end to end, and the same current flows through each component. In a parallel circuit, the components are connected across the same voltage source, and the voltage across each component is the same.

KCL (Kirchhoff's Current Law) states that the total current entering a junction is equal to the total current leaving the junction. KVL (Kirchhoff's Voltage Law) states that the total voltage around a closed loop in a circuit is equal to the sum of the voltage drops.

<p>AC circuits involve alternating current and voltage. Sinusoidal voltage and current have a specific magnitude and phase angle. They can be represented in polar or rectangular form. The phasor diagram is used to represent the amplitude and phase relationship of the sinusoidal quantities.</p> Signup and view all the answers

<p>Single phase AC systems have one live conductor and one neutral conductor, while three phase AC systems have three live conductors and one neutral conductor. Three phase systems are more efficient for power transmission and are commonly used in industrial applications.</p> Signup and view all the answers

<p>Ohm's Law = Relates voltage, current, and resistance KCL = Current entering a node equals the current leaving the node KVL = Sum of voltage drops in a closed loop is zero Power factor = Ratio of real power to apparent power in AC circuits</p> Signup and view all the answers

<p>Active Elements = Can generate energy or power Passive Elements = Do not generate energy or power Linear Elements = Obey superposition and homogeneity Non-linear Elements = Do not obey superposition and homogeneity</p> Signup and view all the answers

<p>RL-series circuit = Contains a resistor and an inductor in series RC-series circuit = Contains a resistor and a capacitor in series RLC circuit = Contains a resistor, inductor, and capacitor in series 3-phase AC system = Consists of three sinusoidal voltages with a phase difference of 120 degrees</p> Signup and view all the answers

<p>Magnitude and phase = Polar and rectangular representation of sinusoidal voltages and currents Reactance = Inductive or capacitive opposition to the flow of AC current Phasor diagram = Graphical representation of sinusoidal voltages and currents Star and Delta connection = Types of three-phase AC system connections</p> Signup and view all the answers

<p>Bilateral Elements = Response is the same for positive and negative directions of current or voltage Unilateral Elements = Response depends on the direction of current or voltage Active Elements = Can produce power or energy Passive Elements = Cannot produce power or energy</p> Signup and view all the answers

<p>Ohm's Law = Relates the voltage, current, and resistance in a circuit KCL = States that the total current entering a node is equal to the total current leaving the node KVL = States that the total voltage around a closed loop in a circuit is zero Phasor diagram = Representation of the amplitude and phase angle of sinusoidal quantities in AC circuits</p> Signup and view all the answers

<p>R, L, C = Passive Elements Diode, Transistor = Non-linear Elements Voltage Source, Current Source = Active Elements Resistor, Inductor, Capacitor = Linear Elements</p> Signup and view all the answers

<p>RLC-series circuit = Combination of resistor, inductor, and capacitor connected in series in an AC circuit Star connection = Method of connecting three-phase AC loads where each load is connected between a phase and a neutral wire Delta connection = Method of connecting three-phase AC loads where each load is connected between phases in a triangular arrangement 3-phase AC generation = Generation of three sinusoidal voltages that are 120 degrees out of phase with each other</p> Signup and view all the answers

<p>Power factor = Ratio of real power to apparent power in an AC circuit Reactance = Opposition to the flow of AC caused by inductance or capacitance Magnitude and phase = Representation of the amplitude and phase angle of sinusoidal quantities in AC circuits Polar and rectangular representation = Different ways to represent complex numbers in AC circuits</p> Signup and view all the answers

<p>Series-parallel circuit problems = Combination of series and parallel circuit analysis to solve for voltage, current, and resistance Basic types of elements = Introduction to different passive and active elements in electrical circuits Three phase AC types of connection = Comparison and explanation of star and delta connections in three-phase AC systems Calculation of reactance and power factor = Solving problems involving determination of reactance and power factor in AC circuits</p> Signup and view all the answers