Introduction to Basic Electrical Circuit

Front

What are the learning outcomes of the Basic Electrical Circuit course?

Back

1. Describe the operation of the generation, transmission, and distribution of electrical systems. 2. Describe series, parallel, and series-parallel circuits. 3. Define Ohm’s and Kirchhoff’s Laws. 4. Calculate electrical quantities of series and parallel circuits. 5. Define quantities and units related to AC waveform. 6. Determine the quantities of sinusoidal AC waveform.

Front

What is the Electrical Power System?

Back

A network of electrical components deployed to supply, transfer, and use electric power, divided into generators, transmission systems, and distribution systems.

Front

What is the process of electricity generation?

Back

Electricity generation is the process of generating electric power from various sources of primary energy, primarily from non-renewable sources like fossil fuels.

Front

What are the main types of energy resources?

Back

1. Renewable Energy: Easily replaced or available on a perpetual basis (e.g., wind, hydroelectric, solar). 2. Non-renewable Energy: Found in limited amounts and used up faster than they can be replaced (e.g., fossil fuels).

Front

What is the purpose of a step-up transformer in the electrical power system?

Back

To increase the voltage from the power station (e.g., from 11 kV to higher voltages like 132 kV, 275 kV, and 500 kV) for efficient transmission.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, forming a single path for current flow. In a parallel circuit, components are connected across common points, allowing multiple paths for current.

Front

What is Ohm’s Law?

Back

Ohm’s Law states that the current flowing through a resistor is directly proportional to the voltage across it and inversely proportional to the resistance, expressed as I = V/R.

Front

What are Kirchhoff’s Laws?

Back

1. Kirchhoff's Current Law (KCL): The sum of currents entering a node equals the sum of currents leaving that node. 2. Kirchhoff's Voltage Law (KVL): The sum of voltage sources and voltage drops in a closed loop is zero.

Front

What is the formula for calculating total resistance in a series circuit?

Back

RT = R1 + R2 + ... + Rn.

Front

What is the formula for calculating total resistance in a parallel circuit?

Back

1/R_T = 1/R1 + 1/R2 + ... + 1/Rn.