All electric circuits need an energy source, such as a battery. Learn what happens inside a battery, and analyze simple circuits in series and in parallel, involving one or more resistors. When capacitors are incorporated into circuits, they store electric energy and introduce time dependence into the circuit's behavior.
Dr. Niraj Lal meets the Australians leading the biggest change to the electricity grid in a century: the rise of renewable energy. Along the way he explores the new technologies keeping the power on now and in the future.
Trace the distribution of electrical power from a substation to your home. Begin with the transformer, discovering how this crucial device functions. By the end of this lecture, you will be able to read a utility pole like a book, analysing the different services attached to these ubiquitous structures.
Study the technological marvel called the grid—the system that transmits electricity from its point of generation to users. Learn why electrical transmission lines come in threes, why AC power is used instead of DC, and the reason transmission voltages are so high.
As you grow familiar with physical properties of electric circuits, become acquainted with the instruments used to measure these quantities: voltmeters, ammeters, ohmmeters, multimeters, and the oscilloscope. See how each of these instruments interacts with a circuit to test circuit behavior or measure quantities that may vary over time.
Survey the three most important sources of renewable energy: hydropower, wind power, and solar power. Look at the inner workings of hydroelectric dams, wind turbines, solar-thermal power stations, and photovoltaic arrays to see how each takes a renewable energy source and converts it into electricity.
Sep 2018 | 14min | WorkSafeQueensland
The Electrical safety for apprentices film is aimed at both apprentices and supervising tradespeople to help to build the capabilities of apprentices to be safe and productive at work. Find out how to give your apprentice the best support, training and mentoring within your business.