Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What is Conductance?Conductance (also known as electrical conductance) is defined as the potential for a substance to conduct electricity. Conductance is the measure of how easily electrical current (i.e. flow of charge) can pass through a material. Conductance is the inverse (or reciprocal) of electrical resistance, represented as 1/R.To have a better understanding of conductance, one must recall the resistance of an object. In a qualitative sense, the resistance tells us how difficult it is fo

What is Permeance?Permeance is defined as a measure of the ease with which magnetic flux can be admitted through a material or magnetic circuit. Permeance is the reciprocal of reluctance. Permeance is directly proportional to the magnetic flux and is denoted by the letter P.From the above equation we can say that the quantity of magnetic flux for a number of ampere-turns is depended on permeance.In terms of magnetic permeability, permeance is given byWhere, = Permeability of free space (vacuum)

The Star-Delta 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 S

What is Reluctance?Magnetic reluctance (also known as reluctance, magnetic resistance, or a magnetic insulator) is defined as the opposition offered by a magnetic circuit to the production of magnetic flux. It is the property of the material that opposes the creation of magnetic flux in a magnetic circuit. Reluctance of Transformer Core In an electrical circuit, the resistance opposes the flow of current in the circuit and it dissipates the electric energy. The magnetic reluctance in a magn

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

Fleming’s Left-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. It is similar to Fleming’s Right-Hand Rule, but it is used to predict the direction of the force on a conductor moving through a magnetic field, rather than a stationary conductor.To use Fleming’s Left-Hand Rule, follow these steps:Hold your left h

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