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- Basic physical science - Apply terms, definitions, and concepts from mechanics, electricity, heat, and chemistry. (Solutions may involve simple formulas found in basis physics texts but will not involve algebraic manipulation or trigonometry.)
- Classical Mechanics Classical mechanics is concerned with the set of physical laws describing the motion of bodies under the influence of a system of forces.
- Basics of Electricity Electricity concerns the presence of electric charges, as well as the flow of those charges as an electric current.
- Heat and Temperature Knowing the difference between heat and temperature is important. It can lead to a clearer understanding of energy.
- Thermal Physics - Heat and Temperature Understand how the relative temperature of two objects affects the direction that heat is transferred between the two objects.
- Fundamentals of chemistry An introduction to the Periodic Table, stoichiometry, chemical states, chemical equilibria, acid & base, oxidation & reduction reactions, chemical kinetics, inogranic nomenclature and chemical bonding.
- Fundamentals of electricity
Recognize and define the standard units used to describe electrical circuits, energy, and power. Apply Ohm's Law to simple circuits.- How voltage, current, and resistance relate (Ohm's Law) The amount of electric current through a metal conductor in a circuit is directly proportional to the voltage impressed across it, for any given temperature.
- Electrical units of measurement Reference table of electrical & electronic units of measurement.
- Ohm's Law & Watt's Law Cheat Sheet Ohm's Law states the relationship between voltage, current and resistance. Watt's Law states the relationship between power, voltage and current.
- Basic Electrical Theory: The Fundamental Laws of Electricity A strong foundation for any electrical worker is built on a thorough knowledge of the laws that govern the operation of electricity.
- Commutators: Basics on AC and DC Generation [Video] Watch how generators make AC power and how to make DC power using a commutator.
- Basic Electrical Terms and Definitions Understanding electricity requires knowledge of these basic electrical terms.
- AC circuits
Identify series and parallel circuits and apply Ohms Law to simple single-loop ac circuits with linear components. Calculate equivalent capacitance and inductance. Measure and/or calculate impedance and power.- Fundamentals of AC Power
- Peak vs. Average vs. RMS Voltage Cheat Sheet The term "RMS" stands for "Root-Mean-Squared", also called the effective or heating value of alternating current, is equivalent to a DC voltage that would provide the same amount of heat generation in a resistor as the AC voltage would if applied to that same resistor.
- Simple AC Circuit Calculations AC circuit calculations for resistive circuits are the same as for DC.
- Three-Phase Power
- Three-phase Power Systems A polyphase power system can deliver more power at less voltage with smaller-gage conductors than single- or split-phase systems.
- Phase Rotation Phase rotation, or phase sequence, is the order in which the voltage waveforms of a polyphase AC source reach their respective peaks. For a three-phase system, there are only two possible phase sequences: 1-2-3 and 3-2-1, corresponding to the two possible directions of alternator rotation.
- Line vs. Phase Measurements A polyphase power system uses multiple voltage sources at different phase angles from each other (many "phases" of voltage waveforms at work). A polyphase power system can deliver more power at less voltage with smaller-gage conductors than single- or split-phase systems.
- Why Wye? Why Delta? Why a Wye or Delta connection is required in a three-phase circuit
- Capacitance
- The Basics of Capacitors A capacitor is constructed by separating two metal conductors called plates with an insulating material called a dielectric.
- Electric Fields and Capacitance Whenever an electric voltage exists between two separated conductors, an electric field is present within the space between those conductors.
- AC Capacitor Circuits Capacitors oppose changes in voltage by drawing or supplying current as they charge or discharge to the new voltage level.
- Inductance
- The Basics of Inductors In its most basic form, an Inductor is nothing more than a coil of wire wound around a central core.
- AC Inductor Circuits Inductors oppose changes in current through them, by dropping a voltage directly proportional to the rate of change of current.
- Power Factor
- Phase Relationships in AC Circuits Know Voltage Leads Current in an inductor (ELI) and Current Leads Voltage in a capacitor (ICE).
- The Power Triangle: True, Reactive, and Apparent Power There are several important power equations relating the three types of power to resistance, reactance, and impedance (all using scalar quantities).
- Power Triangle and Power Factor Electrical power consumed in an AC circuit can be represented by the three sides of a right angled triangle, known commonly as a power triangle.
- Impedance
- Reactance And Impedance -- R, L, And C Impedance is a comprehensive expression of any and all forms of opposition to electron flow, including both resistance and reactance.
- Advanced Ohm's Law Calculator Calculate voltage, current, resistance, and power with any given two properties, expanded for AC circuits.
- Fundamentals of AC Power
- DC circuits
Identify series and parallel circuits and apply Ohm's Law to simple series dc circuits with linear nonreactive components. Calculate equivalent resistance of and power consumed by resistive devices.- Simple Series Circuits The first principle to understand about series circuits is that the amount of current is the same through any component in the circuit.
- Simple Parallel Circuits The first principle to understand about parallel circuits is that the voltage is equal across all components in the circuit.
- Ohm's Law In this algebraic expression, voltage (E) is equal to current (I) multiplied by resistance (R). Using algebra techniques, we can manipulate this equation into two variations, solving for I and for R.
- Resistors Devices called resistors are built to provide precise amounts of resistance in electric circuits. Resistors are rated both in terms of their resistance (ohms) and their ability to dissipate heat energy (watts).
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