Magnetic Permeability

Definition: The magnetic permeability is defined as the property of the material to allow the magnetic line of force to pass through it. In other words, the magnetic material can support the development of the magnetic field. The magnetic line of force is directly proportional to the conductivity of the material. Their SI unit is Henry …

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Travelling Wave

Definition: Travelling wave is a temporary wave that creates a disturbance and moves along the transmission line at a constant speed. Such type of wave occurs for a short duration (for a few microseconds) but cause a much disturbance in the line. The transient wave is set up in the transmission line mainly due to …

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Restricted Earth Fault Protection

Earth fault is the unintended fault between the live conductor and the earth. It also occurs, because of the insulation breakdown. When the fault occurs, the short-circuit currents flow through the system, and this current is returned through the earth or any electrical equipment. This fault current damaged the equipment of the power system and also …

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Phase Shift in Star Delta Transformer

The phase shift is the angular displacement between the maximum positive value of the alternating quantities having the same frequency. In other words, the angular displacement between high voltage and the low voltage terminal and the corresponding neutral points (real or imaginary), expressed with reference to high voltage side is known as phase displacement (or shift) …

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Electrical Fault

Definition: Fault in electrical equipment or apparatus is defined as an imperfection in the electrical circuit due to which current is deflected from the intended path. In other words, the fault is the abnormal condition of the electrical system which damages the electrical equipment and disturbs the normal flow of the electric current. The fault reduces …

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Electrical Resistance

Definition: The electrical resistance is defined as the difficulty occurs in the flow of electrons. The conductor has free electrons. When the voltage or potential difference is applied across the conductor, the free electrons start moving in the particular direction. During the movement, these electrons collide with the atoms and molecules of the conductor. The atoms …

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Single Line Diagram of Power System

Definition: Single line diagram is the representation of a power system using the simple symbol for each component. The single line diagram of a power system is the network which shows the main connections and arrangement of the system components along with their data (such as output rating, voltage, resistance and reactance, etc.). It is …

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Electric Current

Definition: Electric current is defined as the rate of flow of negative charges of the conductor. In other words, the continuous flow of electrons in an electric circuit is called an electric current.The conducting material consists a large number of free electrons which move from one atom to the other at random.  Unit of Current …

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Generation of Alternating Voltage

The voltage which changes polarity at regular interval of time is known as the alternating voltage. The one complete cycle of an alternating quantity consists two half cycles. And the direction of a half cycle changes after every particular interval of time. The machine which generates the alternating voltage is known as the alternator. The …

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