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Electrical Engineering Articles
Page 8 of 12
Nominal Voltage, Rated Voltage and Operating Voltage
In electrical engineering, we frequently come across the following three voltage ratings related to electrical equipment and power system − Nominal Voltage Rated Voltage Operating Voltage In this article, we will discuss all these three terms related to the voltage rating of electrical systems. What is Nominal Voltage? The term nominal voltage means named voltage. The nominal voltage is defined as the voltage value assigned to an electric circuit or system to designate its voltage class. In simple words, the voltage level of an electrical power system is called the nominal voltage of the system. It is also ...
Read MoreIonization Energy – Definition, Formula, and Factors
What is Ionization Energy? The minimum amount of energy that an electron in an atom requires to come out of the influence of the nucleus is called ionization energy. In other words, the measure of difficulty that an electron faces in removing from an atom or ion due to nuclear forces is called the ionization energy. Therefore, the ionization energy gives the measure of strength or binding force by which an electron is held in an atom or ion. Ionization energy is sometimes also known as ionization potential. Alternatively, the amount of energy supplied to an isolated atom to extract ...
Read MoreElectrical Resistance and Resistivity – Definition, Formula, Unit and Measurement
According to the electron theory of matter, we know that all matter (solid, liquid, or gas) is made of tiny particles called molecules. A molecule in turn is made up of atoms. Thus, atoms are the basic building blocks of all matter. An atom consists of a central part called the nucleus, and a space around the nucleus called the extranucleus. The nucleus of an atom contains two particles namely a proton and neutron, while the extra-nucleus contains electrons that revolve around the nucleus in a certain path called the orbit. The electrons in the last orbit are called the ...
Read MoreElectric Charge – Definition, Formula, Unit, Types, and Properties
What is Electric Charge? The physical property of a substance that causes charged substance to experience a force when placed in an electromagnetic field is called electric charge. In other words, electric charge is the physical property of the subatomic particles of matter due to which matter shows electrical behavior. Electric charge is represented by the symbol Q (or q, ). Electric charge is a conserved property, which means the net charge of a closed remains constant. Electric charge can be of two types namely positive charge and negative charge. The positive charge is the charge carried by protons, while ...
Read MoreDrift Velocity, Carrier Mobility and Drift Current – Definition, Formula and Examples
The slow movement of something toward an object is termed as drift. The average velocity of electrically charged particles in a material under the influence of an electric field is called the drift velocity. In this article, we will learn in detail about drift velocity, carrier mobility, and drift current. What is Drift Velocity? When a voltage is applied across the ends of a conducting wire, an electric field is applied at every point of the copper wire. Due to this electric field, the free electrons in the conductor wire experience a force that accelerates them toward the positive end ...
Read MoreConductance and Conductivity – Definition, Unit, Formula and Examples
In this article, we shall discuss electrical conductance and conductivity, its definition, formula, unit of measurement, and the solved numerical examples. What is Electrical Conductance? The measure of how easily the electric charge (or electrons or electric current) can flow through a material is called the conductance or electrical conductance of that material. Therefore, electrical conductance defines the capability of a substance to conduct electricity. In order to understand the concept of electrical conductance, we have to recall the electrical resistance of materials. Electrical resistance is defined as the measure of difficulty that a material offers in the flow of ...
Read MoreBasic Electrical Engineering – Formulas and Equations
The branch of engineering that deals with the study of design and implementation of various electrical devices and systems used in our everyday life as well as generation, transmission and distribution of electrical power is popularly known as Electrical Engineering. Electrical engineering primarily convers the study of electric circuits, power systems, electrical machines, power electronics, control system, and many more. Electrical engineering uses formulae and mathematical equations to explain and prove the truth of concepts. These formulae and equations are very useful in understanding the behavior of electrical systems and helps to perform the different calculations in practice. This article ...
Read MoreDifference between Electrical Engineering and Electronics Engineering
Electrical engineering deals with the study of how to generate, transmit and utilize the electrical energy. Electronics engineering, on the other hand, deals with the study of how to control and switch the flow of electrical energy in a circuit. Go through this article to find out the other major differences between electrical and electronics engineering.What is Electrical Engineering?Electrical engineering is the branch of engineering which deals with the generation, transmission, distribution and utilization of electrical energy.Electrical engineering is also concerned with study and design of electrical machines. The field of electrical engineering provides solutions for problems in various fields ...
Read MoreWhat is Street Lighting? – Objective, Principle, Advantages & Disadvantages
A source of light that is mounted on a lamp column or pole either on the side of the road or within the median to provide illumination is known as street lighting.Street lighting is required along the road to have safer, comfortable, convenient and efficient movement of vehicles at night.Objective of Street LightingThe primary objectives of street lighting are −Street lighting is required to increase or enhance the community value of the street.Street lighting is provided along the road sides to make traffic and obstructions on the road clearly visible in order promote safety and convenience.Street lights also make the ...
Read MoreWhat is Flood Lighting? – Definition, Purpose, Calculation and Applications
The flooding of large surfaces with light through powerful projectors, where the light sources are concentrated into narrow light beams using specific reflectors is known as flood lighting. Flood lighting is an artificial light with high-intensity, broad beam.Purpose of Flood LightingThe flood lighting may be employed for the following purposes −To enhance the beauty of the ancient monuments at night.To illuminate the railway yards, car parking, sport stadiums, construction sites, etc.To illuminate the advertising boards and show-cases, etc.Location and Mounting of ProjectorsIn practice, there are two possible locations of projectors for flood lighting, which are −For small buildings, uniform flood ...
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