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

What is an Electrical Circuit?An electrical circuit is a combination of two or more electrical components that are interconnected by conducting paths. The electrical components may be active components, or inactive components, or some combination of the two.What is a DC Circuit?There are two types of electricity – direct current (DC) and alternating current (AC). The circuit that deals with direct current or DC, is referred to as the DC circuit, and the circuit that deals with alternating curren

An electric circuit based on three concepts, namely, node, branch and loop. As per definition, an electric network is a combination of interconnected circuit elements. A network may or may not provide closed path to the electric current to flow. But, an electrical circuit may be a combination of one or more networks which gives closed path to the electric current. That means, when one or more networks are interconnected together to complete one or more paths to the current, an electric circuit i

What is an Electrical Circuit?An electrical circuit (also known as an electrical network or electric circuit) is an interconnection of various active and passive components in a prescribed manner to form a closed path. Electric current must be able to flow from the source through some conductive medium and then back to the other terminal of the source.The main parts of an ideal electric circuit are: Electrical sourcesfor delivering electricity to the circuit and are mainly electric generators an

What are Active and Passive Circuit Elements (Components)?Active and passive components form the two main types of electronic circuit elements. Anactive componentsupplies energy to anelectric circuit, and hence has the ability to electrically control the flow of charge. Apassive componentcan only receive energy, which it can either dissipate or absorb.Types of Electronic ComponentsElectronic elements that make up a circuit are connected together by conductors to form a complete circuit. If these

There are two types of system available in electric circuit, single phase and three phase system. In single phase circuit, there will be only one phase, i.e the current will flow through only one wire and there will be one return path called neutral line to complete the circuit. So in single phase minimum amount of power can be transported. Here the generating station and load station will also be single phase. This is an old system using from previous time.In 1882, new invention has been done o

Before studying electrical engineering it is essential to know that angular relation between mainly voltage and current in a system. For understanding the relation between voltage and we should first know definition of vector and go through vector algebra and vector diagram.Definition of VectorThere are some quantities which have both magnitude and as well as their direction of action. This type of quantities is called vector quantity. This is how one can make basic definition of vector in very

In several electrical and power applications, the measurement of current flow is essential.Hence, current measurement is commonly required for monitoring and controlling applications.Depending on the kind of application, many types of current sensors with specialised current sensing technologies are available to detect (or)measure current flow.A current sensing resistor, also known as a shunt resistor, is the most prevalent methodto measure current flow in any application.This postdescribes shun

To derive the relations between line and phase currents and voltages of a star connected system, we have first to draw a balanced star connected system.Suppose due to load impedance the current lags the applied voltage in each phase of the system by an angle ϕ. As we have considered that the system is perfectly balanced, the magnitude of current and voltage of each phase is the same. Let us say, the magnitude of the voltage across the red phase i.e. magnitude of the voltage between neutral point

What is a Diode?Diodes are two-terminal electrical devices that act as a one-way switch, allowing current to flow (transfer) only in one direction. These diodes are made from semiconductor materials such as Silicon, Germanium, and Gallium arsenide.The diode’s two terminals are referred to as the Anode and Cathode. The functioning of a diode may be categorised into two types based on the potential difference (potential energy)between these two terminals: If the anode has a greater voltage than th

Complex PowerIt is very conceptual and essential to understand. For establishing the expression of complex power, we have to first consider a single phase network that’s voltage and current can be represented in complex form as V.ejα and I.ejβ. Where α and β are angles that voltage vector and current vector subtend with respect to some reference axis respectively. The active power and reactive power can be calculated by finding the product of voltage to conjugate of current.That means,This (α −