Marine Electrical - Electricity Laws and Circuits
Learn about the laws and terminologies of electrical components of the marine environment from this free online course.
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Electric current can be classified into direct and alternating current based on its direction of flow. Direct current and alternating current are used in different places based on the requirement of the system. Direct current is easy to explain compared to alternating current. The direct current is obtained using batteries, DC generators, solar cells, etc. Direct current is one in which the current is unidirectional (i.e it will not change its direction for every half-cycle as alternating current). In this course, you are going to learn about the effects of connecting the DC sources in series and parallel. The flow of charges results in an electric current. In a wire, the charges are carried by electrons moreover in an electrolyte, the charges are carried by both electrons and ions. The SI unit of electric current is ampere. In an electric current, the particles that carry electric charge are known as charge carriers. AC is the current running through the wires and appliances on most ships. An AC waveform can be sinusoidal, square, or sawtooth-shaped. Alternating current electricity is the type of electricity commonly used throughout the world including onboard large vessels. The voltage of an AC power source changes from instant to instant in time.
This course, Marine Electrical - Electricity Laws and Circuits, begins with an analysis of Ohm's law as well as the voltage, current, and resistance in the relationship that gives rise to the law. You will learn about the series connections of power source, resistances, inductances, and capacitors along with the effects of such connections. You will learn about power, its SI unit, and how it relates to the rate of work and energy. This course also illustrates potential dividers and their use in electrical circuits. You will be taken through the characteristics of electric current flow in parallel circuits, alongside voltage and resistance quantities. The course outlines the effects and limitations of Ohm's law as well as the series-parallel connections of electric circuits. You will learn about Kirchhoff's Current Law (KCL) relating complex circuits with different power sources and branches that cannot be solved with Ohm's law. In this course, Kirchhoff's Voltage Law and its application to circuits with voltage supply will also be covered. This course discusses the basic concept, units of measures measurement, and the types of electric currents. The course analyses the direction, source in addition to the comparison of the direct and the alternating current. You will also learn about the basic concepts, properties, and effects of a magnetic field on a conductor in electromagnetism.
This free online course on Marine Electricity Laws and Circuits provides an understanding of Electromotive force (EMF) generation and Faraday's laws along with the methods of producing Induced EMF. By taking this course, you will study the practical AC generator in addition to the quantity of the instantaneous value of induced EMF. You will also examine the frequency of EMF induced in a generator and the formula used to determine the magnitude of induced EMF. You will study the concepts used in waveform and the sinusoidal variation of EMF as well as the step-by-step process of calculating the average values of the sinusoidal current. You will also study the Root Mean Square (RMS) value of an alternating current. You will study the concepts of phasors representation, addition, subtraction, and the J operator. Lastly, you will learn about the alternating current circuits with resistors along with the power in a resistive circuit. This course will be of significant interest to students, researchers, marine engineers, environmentalists, and anyone with an interest in the electricity of the marine environment. Register for this course today and begin your next learning journey!Start Course Now
DC Circuits - Learning Outcomes
Energy, Series Circuits, and Potential Divider
DC Circuits - Lesson Summary
AC Circuits - Learning Outcomes
Alternating Current Theory
AC Voltages, Currents and P.F
Phasors and j Operator
AC Circuits With Single Parameters
AC Circuits With RLC Combinations
AC Circuits - Lesson Summary
Upon successful completion of this course, you will be able to:
- State the basic laws of electricity.
- Discuss energy and power.
- Recall Ohm's law and how it relates to the basic laws of electricity.
- Define Direct Current (DC).
- Describe the effects of series and parallel connections of DC voltage sources.
- Discuss the Alternating Current Theory.
- Discuss the generation of AC current and voltage.
- Distinguish between the Phasor Representation and Phase Difference of AC Quantities.
- Describe Circuits Consisting of Resistor, Inductor, and Capacitor.
- Describe Series and Parallel Connection of AC Circuits.
- Explain about Sinusoidal Waveform.
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