The Delta-Star transformation is a technique in electrical engineering that allows the impedance of a three-phase electrical circuit to be transformed from a “delta” configuration to a “star” (also known as “Y”) configuration, or vice versa. The delta configuration is a circuit in which the three phases are connected in a loop, with each phase connected to the other two phases. The star configuration is a circuit in which the three phases are connected to a common point, or “neutral” point.The D

Fleming’s Right-Hand Rule is a principle in electromagnetism that describes the relationship between the direction of the current in a conductor, the direction of the magnetic field around the conductor, and the direction of the force on the conductor.Fleming’s Right-Hand Rule states that if the thumb, index finger, and middle finger of the right hand are pointed in the direction of the current, the direction of the magnetic field, and the direction of the force on the conductor, respectively, t

The method of connecting non-current carrying portions to earth or ground, such as the metallic frame of an electrical device or certain electrical components of a power system, such as the neutral point ofstar-connected system, is known as grounding, also referred to as earthing.To avoid accidents &damage to the system’s equipment, electrical systems should always be grounded.This postwill discuss grounding conductors and how to determine the appropriate size for a grounding conductor based

For the purpose of accurately representing a specific electrical system or circuit in Electrical and Electronics Engineering, many forms of drawings and diagrams are used.These electrical circuits are shown using lines, which stand in for wires, and symbols or icons, which are used to represent the various electrical &electronic components.It is helpful to acquire a better knowledge of the link between the various components. When wiring a structure, electricians will make use of something c

What is Nominal Voltage?Nominal voltage is a value assigned to a circuit or system to designate its voltage class conveniently(e.g. 120/240 volts, 300 volts, 480Y/277 volts). The actual voltage at which a circuit operates can vary from the nominal voltage within a range that permits satisfactory operation of equipment.The word “nominal” means “named”. It is not the precise operating or rated voltage. i.e. a 240-volt circuit may not be precisely 240.0000 volts, and may instead operate at 235.4 vo

What is an SWR Meter?A standing wave ratio meter – also known as an SWR meter, ISWR meter (current “I” SWR), or VSWR meter (voltage SWR) – is defined as a device that measures the standing wave ratio (SWR) in a transmission line. The SWR meter indirectly measures the degree of mismatch between a transmission line and its load (usually an antenna). This is helpful to know the effectiveness of the impedance matching performed by technicians.SWR meter helps to determine how much of radiofrequency e

What is a Current Divider?A current divider is defined as a linear circuit that produces an output current that is a fraction of its input current. This is achieved through the connection of two or more circuit elements connected in parallel, the current in each branch will always divide in such a way that the total energy expended in a circuit is minimum.In other words, in a parallel circuit, the supply current splits into a number of parallel paths. It is also known as the “current divider rul

What is Voltage?Voltage (also known as electric potential difference, electromotive force emf, electric pressure, or electric tension) is defined as the electric potential difference per unit charge between two points in an electric field. Voltage is expressed mathematically (i.e. in formulas) using the symbol “V” or “E”.If you’re looking for a more intuitive explanation to help explain what voltage is, skip to this section of the article.Otherwise, we’ll continue below with a more formal defini

What is meant byElectronic Ballast?An electronic ballast, also referred to as an electrical ballast, is a component of equipment that controls the starting voltage & currents of the lighting fixtures.This is accomplished by the use of the electrical gas discharge technique. To start the gas discharge method in fluorescent lamps, an electronic ballast converts the power frequency to a very high frequency by managing the voltage across the bulb and current through the lamp.Block Diagram of Ele

What is Electric Current?Electric current is defined as a stream of charged particles—such as electrons or ions—moving through an electrical conductor or space. It is the flow rate of electric charge through a conducting medium with respect to time. Electric current is expressed mathematically (e.g. in formulas) using the symbol “I” or “i”. The unit for current is is ampere or amp. This is represented by A.Mathematically, the flow rate of charge with respect to time can be expressed as,In other