Zero Sequence Current

Definition: The unbalanced current flows in the circuit during the earth fault is known as the zero sequence current or the DC component of the fault current.The zero phase sequence means the magnitude of three phases has zero phase displacement.The three vector lines represent the zero sequence current and it is detected by adding the…

Read more

Power Factor Correction

Definition: The power factor correction means bringing the power factor of an AC circuit nearer to one by using the equipment which absorbs or supply the reactive power to the circuit. Usually, the power factor correction can be done by using the capacitor and the synchronous motor in the circuit.The power factor correction will not…

Read more

Electric Power

Definition: The rate at which the work is being done in an electrical circuit is called an electric power. It is produced by the generator and can also be supplied by the electrical batteries.The electrical power is transformed from one form of energy to others like motion, heat, light, etc. where V – Voltage in…

Read more

Valve Type Lightning Arrester

Definition: The lightning arrester which consists the single or multi-gaps connected in series with the current controlling element, such type of arrester is known as the lightning arrester. The gap between the electrodes intercepts the flow of current through the arrester except when the voltage across the gap raises beyond the critical gap flashover. The…

Read more

Electric Field

Definition: The region around the electric charge in which the stress or electric force act is called an electric field or electrostatic field. If the magnitude of charge is large, then it may create a huge stress around the region. The electric field is represented by the symbol E. The SI unit of the electric…

Read more

Relay

Definition: The relay is the device that open or closes the contacts to cause the operation of the other electric control. It detects the intolerable or undesirable condition with an assigned area and gives the commands to the circuit breaker to disconnect the affected area. Thus protects the system from damage. Working Principle of Relay…

Read more

DC Circuit

Definition: The closed path in which the direct current flows is called the DC circuit. The current flows in only one direction and it is mostly used in low voltage applications. The resistor is the main component of the DC circuit. A simple DC circuit is shown in the figure below which contains a DC…

Read more

Law of Conservation of Energy

Definition: The law of conservation of energy states that the energy can neither be generated nor destroyed. It is converted from one form to another. The total input power is equal to the sum of the following three components; they are the dissipated energy, stored energy and useful output energy.The devices which convert the mechanical…

Read more

AC Motor

Definition: The motor that converts the alternating current into mechanical power by using an electromagnetic induction phenomenon is called an AC motor. This motor is driven by an alternating current. The stator and the rotor are the two most important parts of the AC motors. The stator is the stationary part of the motor, and…

Read more

Lap & Wave Winding

The armature winding is the most important part of the rotating machine. It is the place where energy conversion takes place, i.e., the mechanical energy is converted into electrical energy, and the electrical energy is converted into mechanical energy. The armature winding is mainly classified into types, i.e., the lap winding and the wave winding.…

Read more