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Let us begin by understanding the concepts of DCS Network Communication Protocol and the Field Communication Protocol.DCS Network Communication ProtocolGenerally, a system convention characterizes principles and traditions for correspondence between arranging gadgets. It incorporates components for gadgets to recognize and make associations with each other, and in addition designing standards that determine how information is bundled into messages sent and received. A few conventions likewise bolster message affirmation and information pressure intended for dependable and additionally superior system correspondence.Current conventions for PC organizing all by and large utilize parcel changing systems to send and get messages as bundles - messages ... Read More
Network communication is nothing but a conversation between two persons. Let us consider a real life situation, for two people to communicate effectively, the first and foremost requirement is language.If they both do not know a common language communication is simply not possible. They will first say 'Hi', 'How are you' etc and do a handshake.Similar to this, in computer communication, for two computers to effectively communicate we need the following −Set of procedures for handshakingSet of rules for interpreting the data sentSteps for recovery if communication is broken in the middle.Network protocols are a set of standards which facilitate ... Read More
Internet-based threats are Malware programs which can be targeted when we use the Internet. These Web-based threats include a range of malicious software programs which are designed to infect victims' computers.Major Threats on InternetSome of the major threats on internet are as follows −SpamGenerally we received a lot of Emails with' spam ' or Junk folder insinuates that spam emails are huge issues, with more than Half of the emails being siphoned into these folders. Being an annoyance, spam emails are not a direct threat but they contain malware.TrojanTrojan represents harmless computer programmes. So we don't detect them and that's ... Read More
Skype is a Microsoft product which offers free video and audio calling which is also having the ability to call landlines and smartphones with paid services anywhere in the world. It has a first mover advantage. It came into existence before the Facebook messenger.Facebook Messenger allows users to play in-app games, make video and audio calls along with sending or receiving payments. It is tied up with the social media platform. It is not a paid service. It is free of cost.DifferencesThe major differences between Skype and Facebook Messenger −SkypeFacebook MessengerSkype doesn’t have stories and it makes a professional feel. ... Read More
A computer virus is a malware, which corrupts or destroys our files on the system. The computer virus is not a new thing to us. It was created and started spreading around the 1980's. Virus is a type of malware which is capable of self-replicating itself and spreads from one machine to another.Generally, Computer virus is a program which controls the computer without the knowledge of the user and it runs parallel with the internet. If more devices are connected and all people are using the web obviously threat and security risk are increasing.Types of Computer VirusesSome of the types ... Read More
What is Submerged Arc Welding?Submerged arc welding (SAW) is a welding process that involves the formation of an electric arc between a continuously fed electrode and the workpiece to be welded. The process of submerged arc welding was developed by the Linde-Union Carbide Company.SAW requires a continuous fed of consumable solid or flux cored tubular electrode. In case of submerged arc welding, the molten weld and the arc are protected from the atmospheric contamination by being submerged under a blanket of granular fusible flux consisting of lime, silica, manganese oxide, calcium fluoride and other compounds.A simplified schematic diagram of submerged ... Read More
What is Resistance Heating?When the heat is produced by passing electric current through the resistance of a conductor, it is called electric resistance heating (ERH). This method of electric heating is based on the principle of I2R loss. If ‘P’ is the electric power developed in the heating circuit and ‘t’ is the time in seconds. Then, heat energy produced is given by, H = 0.24 pt CaloriesThe power P depends upon the magnitude of current through the circuit. The source of electric supply can be AC or DC of any suitable voltage and frequency.The major applications of the resistance ... Read More
What is Plasma Arc Welding?Plasma arc welding (PAW) is a welding process in which the electric arc is formed between an electrode and the workpiece. The electrode used in the plasma arc welding is usually but not always made of sintered tungsten. The process of plasma arc welding was discovered by Robert Merrell Gage in 1957.By positioning the electrode within the body of the welding torch, the plasma arc can be separated from the shielding gas envelope. Then, the plasma is forced through a fine-bore copper nozzle which constricts the arc and the plasma exits the nozzle orifice at high ... Read More
The type of electric welding in which an arc is established between the workpiece and the filler metal electrode is known as metallic arc welding or simply metal arc welding.The figure shows the simplified circuit diagram of metallic arc welding.In metallic arc welding, the intense heat of the arc forms a molten pool in the metal being welded and at the same time melts the tip of the electrode. As the electric arc is maintained, filler metal from the tip of the electrode is transferred across the arc and it fuses with the molten base metal.The electric arc in this ... Read More
Induction heating is the process of heating the materials which are electrically conductive by electromagnetic induction like metals.Working Principle of Induction HeatingInduction heating makes use of the induced current by the electromagnetic induction in the charge to be heated. The induction heating works on the principle of transformer action, in which the primary winding which is supplied from an AC source is magnetically coupled to the charge, to be heated, which acts as a short-circuited secondary of a single turn.When the AC supply is connected to the primary winding, it induces currents in the charge. As the secondary, i.e., the ... Read More