Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Miscellaneous Articles
Page 3 of 8
How to Block Pop-Ups on Google Chrome?
Pop-up Ads can be pretty annoying while browsing the Internet. Apart from that, cybercriminals can exploit pop-ups by infecting them with malware so that when users click on them, the malware can infiltrate their device easily.It is better to block these annoying and malicious pop-ups instead. Google Chrome is one of the most popular browsers on the internet. Its users are most affected by the pop-up viruses. If you are a Google Chrome browser user, this post will guide you on how to block pop-ups on your browser.Block Pop-Ups on Google Chrome Windows/macOS/LinuxFor Windows, macOS, and Linux users, here is ...
Read MoreExplain the difference between Virus and Worm?
Most people consider a computer virus and a computer worm as equivalent. Although their primary aim is to create havoc by infiltrating a system, the way they attack, spread, and replicate sets them apart.In this post, we would walk through in detail what the computer virus and the computer worm are and how they are different from each other.What is a VirusA virus is one of the most common and oldest computer malware. Like a biological virus spreads from human to human and damages their body, a computer virus spreads from computer to computer and corrupts user files, documents, and ...
Read MoreExplain the difference between Dark Web Vs Deep Web?
In recent times, there has been enhancements in the percentage of people visiting the Dark Web. It is mainly because of its secretive nature. Most people don't know about the dangers and simply surf it without any knowledge. In this article, we will discuss briefly about what Deep Web and Dark Web are in reality. We will discuss how they differ from each other. We will also discuss whether it is illegal to visit the dark web.Levels of the InternetTo understand the dark and the deep web, you should know about the Levels of the Internet because they both are ...
Read MoreElectrical Components and Their Symbols
Wires and TracesComponent NameSymbolWires or ConductorTrace Junction or Connected WiresTrace Crossing or Unconnected WiresGroundsComponent NameSymbolGround or EarthSignal GroundChassis GroundSourcesComponent NameSymbolSingle CellBattery (Combination of cells)Photovoltaic Cell (Solar Cell)Independent or Constant Voltage SourceControlled or Dependent Voltage SourceIndependent or Constant Current SourceControlled or Dependent Current SourceAC voltage SourceResistorsComponent NameSymbolFixed ResistorRheostat (Variable Resistor)PotentiometerThermistor or VaristorCapacitorsComponent NameSymbolNon-polarized CapacitorPolarized CapacitorVariable CapacitorTrimmer CapacitorInductorsComponent NameSymbolAir Cored InductorIron Cored InductorTapped InductorTransformersComponent NameSymbolTransformerCenter Tapped TransformerStep up TransformerStep Down TransformerTransformer with two secondary windingsCurrent TransformerPotential TransformerZero Sequence Current Transformer (ZSCT)DiodesComponent NameSymbolPN Junction DiodeSchottky DiodeZener DiodeLight Emitting Diode (LED)Photo DiodeTunnel DiodeVaricap (Variable Capacitor Diode)Schockley DiodeConstant Current DiodeSilicon Controlled Rectifier (SCR)DiacTransistorsComponent NameSymbolN-channel, Junction ...
Read MoreElectrical Units and Metric Prefixes
A unit of measurement can be defined as a quantity chosen as a standard in terms of which other quantities may be expressed.Engineering is an applied science dealing with a variety of physical quantities (a physical quantity is one which can be measured) like time, speed, voltage, resistance etc. Hence, for the measurement of these quantities standard units are defined.There are a number of electrical units defined which are based on the SI system of units.Standard Electrical Units of MeasurementElectrical QuantitySymbol for QuantityMeasuring UnitSymbol for UnitChargeQ or qCoulombCVoltageV or vVoltVEMFE or eVoltVCurrentI or iAmpereAResistanceR or rOhmΩInductanceLHenryHCapacitanceCFaradFConductanceGMho or Siemen℧ or Ω-1or ...
Read MoreBand Pass Filter Frequency Response
A band pass filter (BPF) is a circuit that passes frequencies within a certain range and rejects all the frequencies outside the range. This range of band pass filter is known as Bandwidth of the filter.The Bandwidth of band pass filter is given by, $$Bandwidth=f_{high}-f_{low}$$Where, fhigh and flow are the higher and lower cut off frequencies.The values of fhigh and flow are given by, $$f_{high}=\frac{1}{2\pi\:R_{2}C_{2}}$$$$f_{low}=\frac{1}{2\pi\:R_{1}C_{1}}$$In the frequency response curve or bode plot of the band pass filter, the signal is blocked(attenuated) at low frequencies with the output increasing at the rate of +20dB/Decadeuntil the frequency reaches the Lower Cut off ...
Read MoreElectrodynamometer Wattmeter – Construction and Working Principle
An electrodynamometer or simply Dynamometer wattmeter is an instrument that is universally used for the measurement of DC as well as AC electric power.It works on the principle of dynamometer i.e. a mechanical force acts between two current carrying conductors.Construction of ElectrodynamometerThe electrodynamometer wattmeter has a fixed coil divided into two parts and is connected in series with the load and caries the load current (I1). The moving coil is connected across the load through a series multiplier resistance (R) and carries a current (I2) proportional to the load voltage. The fixed coil is called as Current Coil and the ...
Read MoreElectromagnets and Their Uses
A magnet whose magnetic field is created by an electric current is known as Electromagnet. An electromagnet consists of a soft iron core wound with a coil of conductor wires.When a direct electric current is passed through the coil of the electromagnet a magnetic field is created around it. Since the magnetic field of electromagnet is a function of electric current flowing through the coil hence, the magnetic field can be alter by changing the amount of electric current. And its polarity can be changed by changing the direction of electric current.Electromagnets are temporary magnets because they can be demagnetized ...
Read MoreFirst Order System Transient Response
To understand the transient response of the first order system, consider the block diagram of a closed loop system with unity negative feedback.The open loop gain G(s) of the system with unity negative feedback is given by, $$G(s)=\frac{1}{s\tau}$$And the closed loop transfer function of the system with unity negative feedback is, $$\frac{C(s)}{R(s)}=\frac{G(s)}{1+G(s)}=\frac{1}{s\tau+1}\:\:\:...(1)$$Where, R(s) = Laplace transform of the input signal r(t), C(s) = Laplace transform of the output signal c(t), τ = Time Constant of the system.As we can see, the power of s is one in the denominator term of the closed loop transfer equation. Hence, the system is said to ...
Read MoreHow does Static Electricity Work?
The static electricity is the result of an imbalance between the positive and negative charges of an object.To understand the phenomena of static electricity, first we need to understand the basics of atoms and charges.The Structure of AtomAll the physical objects are made up of atoms. The atoms in turn made up of electrons, protons and neutrons. The electrons are negatively charges, protons are positively charged and the neutrons does not possess any charge. Therefore, all the physical objects are made up of charges.The opposite charges (positive and negative) attract each other while the like charges (positive and positive or ...
Read More