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Introduction to generators, turbines, motors and transformers and their function in the electrical power (generators, turbines, motors, transformers and electrical systems).

2021-06-13T08:40:00.004+05:45

General information about his works) Mester Twin Motor and Transformer to be the cornerstone of power generation transmission or distribution system.

1) Generator

An electrical machine that converts mechanical power into electrical power. In particular, it is connected to the power generation center and the A.C. (A.C.) Machine This device is also called alternator. Its capacity is KVA. (KVA).

2) turbine

Power generation is an important device connected to the house that converts the kinetic energy obtained from water, steam, etc. into mechanical energy. The turbine is coupled to the rotor of the generator which generates electricity from the generator when the rotor is rotated. There are two main types of turbines:

1. Impulse turbine

It is mainly used in high head / low discharge production houses. This includes Pelton turbine.

2. Reaction turbine:

It is mainly a product of Medium & Low Head and High / Medium Discharge Is used. This type of turbine is mostly used in Nepal. There are two main types:

A. Francis Turbine

B. Kaplan Turbine

A. Francis Turbine: It is mainly used in medium head and high discharge production houses. This type of turban is used in most of the hydropower plants in the country

B. Kaplan Turbine: It is mainly used in low head and high discharge production houses.

3. Motor:

An electrical machine that converts electrical power into mechanical power. It is an electricity consuming machine which is used in industry for industrial production as well as in electrical appliances used for household purposes such as: fan, fridge, grinder, computer, water pump motor etc. This reduces the power factor of the power line and reduces its capacity to HP. (H.P.).

4. Transformer:

A static electrical device that transfers voltage and power from one circuit to another by changing current (increasing or decreasing, respectively). It is mainly used in AC lines only. Or MVA.It is used in electrical systems from production house to load center.Its main function is to keep the power almost constant and reduce the voltage current and transfer the input power to the output as the current flows when the voltage decreases.

#)Prerequisitcs for starting of Generators in power station.

(To be completed before operating generator in hydro power house)

The following are the infrastructures to be completed before operating a generator in a hydroelectric power plant:

1. It is necessary to inspect and check the main and auxiliary equipment connected to the hydropower plant

. 2. Pay special attention to the Protection System

3)Penstock should be filled with water up to the main valve. 4. Synchronous speed to the generator from any auxiliary motor Field excitation should be given after rotating till and after that Just open the Penstock valve to release the water to turn the turbine and separate the auxiliary motor.

5. Only by checking the terminal voltage and frequency of the generator Should be connected to the supply line.

6. The loaded off or output terminal must be kept open when the generator is turned on.

#Necessity of cooling in power stations.

Heat is generated in any stationary or rotating electric machine which degrades the insulation and reduces the life of the machine. If the machine does not have proper cooling, it is not working as per its capacity and it is more likely to burn.

Loss of power in the machine and friction in the rotating machine generate more heat which requires a cooling system to control. Due to the cooling system, the machines connected to the power house such as generators, turbines, transformers, breakers, cables, etc. work according to their capacity without any problem for a long time and the heat generated in the production house makes it difficult for the employees to inspect and operate. Makes an important contribution.

#)Necesity of DC system in power stations and sub-station

D.C. at power houses and sub stations. System requirement Following for the following reasons:

1. In case of sudden failure of main power supply in power house and sub-station, in case of system supply failure, for emergency lighting, i.e. DC connected in the above places. To light a lamp)

2. Protective devices & systems connected to power houses and sub-stations Since it only works on supply.

3. Field Excitation of the generator connected to the power house requires

4 communication systems such as: PLCC, Trunk line, etc. DC system.

electrical measuring device

2021-06-10T18:20:00.004+05:45

Electrical measuring device that is used to measure the electrical quantity consumed by the electrical device. The electrical measuring devices are as follow: 1) VOLT METER

A device that measures the voltage of an electrical circuit or battery or generator is called a volt meter. Electric voltage is usually measured with the help of a volt meter, multi meter or clamp meter. The volt meter is indicated by the letter V. A selector switch is used to measure AC and DC in a volt meter by rotating the switch to the point where V- (Van) or V = (Vac) is written. And D.C. Is measured. The volt meter is connected in parallel to the electrical circuit. Also the value of the resistance of the coil used in the volt meter is higher than that of the ammeter. To check the voltage of single phase, it is measured in the range of 250V. (400 volts) is checked in the range of around 500 V. That is one step above the estimated voltage to the selector switch.

Accuracy is higher if measured in the upper range. H. T. To measure the voltage of the line P.T. (Potential Transformer) / V.T. (Voltage Transformer) / C.V.T. (Capacitive Voltage Transformer) is measured with the help of volt meter. 2) AMMETER

An instrument used to measure the current flowing in an electric circuit is called an ammeter or ampere meter. The letter 'A' is indicated on the emitter. Ammeters, clamp meters or multimeters are used to measure current. Since the total current of the ammeter circuit is measured, it is always connected in series and the wire of the coil used in it is thicker than the volt meter which reduces the value of resistivity in it. . C.T. to measure high current. (Current) Transformer) and ammeter are used. The current indicates the load of the circuit or feeder or electrical equipment. 3)FREQUENCY METER

A frequency meter is used to measure the voltage or frequency of an AC line in an electrical circuit. The unit of frequency is Hertz while the letters H2 or Michael per second (Cycle per second) and frequency. Indicated by letters. It is connected in parallel to the electrical circuit like a volt meter. It is used in power houses and sub-stations. The frequency is calculated using the following formula:

f = PN/ 120 Hz

Where P = no poles in generator

N-Speed of generator in rpm

f = Frequency in Hz

The frequency is 50 Hz in Nepal, India, Bhutan and 60 Hz in USA. 50 Hz means AC current or voltage 50 cycles per second. The frequency in DC is zero. In the field of electricity, the frequency is used in the range of Hz, while the frequency used in communications such as telephones and radios is in the range of KHz (kHz), Mega Hz (MHz). 4) WATT METER

A device that measures the power consumed in an electrical circuit It's called a watt meter. Its connection is different from volt meter and ammeter. It consists of two coils such as a current coil and a pressure or voltage coil of which the current coil is connected in series with the load and the pressure coil is connected parallel to the load. This meter is indicated by the letters w or KW or MW. It is used in power houses, sub-stations and large industries. In order to know the demand of the industrial customers of Nepal Electricity Authority and to make the will in KVA, the number shown by the analog demand meter is divided by 0.8. Is converted to KVA and billing of demand is done on the basis of demand. Also in most industries nowadays T.O.D. Since the meter is used, it gives the value of direct demand as KVA. Which makes billing easier. 5) ENERGY METER

Energy meter is the types of electrical measuring device that is used to measure the electricity consumed by the electrical appliances.That is, a device connected to a customer's home to measure electricity consumption is called an energy meter. Most energy meters have the letter kWh written on them.

"Nepal Vidyut is connected to the energy meter provided by its main authority to keep a record of electricity consumption in all places where electricity is consumed including home, office, industrial and commercial building. It is connected to load and incoming supply. Parts are current coil, voltage coil, magnet, aluminum disc. , Counter, outer cover, etc. The current supply is connected in series and the voltage / pressure coil is connected to the load coil and parallel.It shows the power consumption in units, where 1 unit is 1 kilowatt load of electricity consumed for 1 hour. The energy meter is also called the kilowatt hour meter.

Hypertext markup Language

2021-06-08T18:07:00.006+05:45

Introduction

The HyperText Markup Language (HTML) is the markup language developed by British computer scientist Timothy Berners-Lee in 1990 AD. The HTML is used to prepare web pages of web site. It is not the codes or tags that describe the format and layout of text, image, etc. in a web page. A web page can be prepared in any text editor like Notepad, Text pad, etc. You can also prepare web pages using web authoring software like Microsoft FrontPage, Macromedia Dreamweaver, etc.

Web Terminologies:

1)Web page A web page is a page that contains information on any topic or subject. The information in web page is presented by using different media like text, images, audio, video and animation. The contents of web page can be accessed through a web browser and displayed on a client computer. A web page is also known as HTML document. A web page may have many hyperlinks. When you invoke a hyperlink it opens the linked page.

2)Web site A collection of related web pages stored on a web server is known as web site. A web site has unique Internet Address or Uniform Resource Locator (URL). A typical web site address looks like: http://www.google.com The first component i.e. http (HyperText Transfer Protocol) is the language that allows web browser to communicate between web client and web server. The second component, l.e. www.google.com, identifies the web server that stores the information you seek.

3) Web server A computer on the World Wide Web that stores web sites is known as a Web Server. When a client computer requests a web site through web browser, the web server searches the information within its file system and sends the requested web pages of web site to client computer and the web browser displays the formatted document on the monitor.

4)World Wide Web:

World Wide Web is the one of the popular services of the Internet. It is also called Web. The WWW service of the Internet can be accessed by a web browser using hypertext transfer protocol (HTTP). Millions of web servers are interconnected with each other in the web which provides information on various topics or subjects. So, the WWW is the collection of web servers.

5)Web Browser

A web browser is a program that runs on the client computer and displays information of the web pages on the client computer. Windows Internet Explorer, Opera, Mozilla Firefox, Google Chrome and Netscape Navigator are some popular web browsers. 6)Search Engine A special web site that helps to search information on the web sites on the basis of keyword is known as Search Engine. The popular search engines are www.yahoo.com, www.bing.com, www.google.com, www. atavista.com, etc.

HTML ELEMENTS AND HTML MARKUP TAGS: A HTML document is composed of HTML elements. A HTML tag.contain a start tag, some content or an end tag HTML markup tags are usually called HTML tags or codes. The html tags are the commands in HTML. The HTML tags are used to create web pages Each html tag or code describes how the text, picture or other contents can be displayed in a web page. HTML tags are surrounded by left angle bracket (<) and right angle bracket (>). The html tags are not case sensitive. There are two types of html tags. They are:

a. Container Tag (Paired Tag) b. Empty Tag (Singular Tag)

a. Container Tag :A container tag has both starting (i.e. beginning) and closing tag, A container tag is also known as Paired tag. A starting tag is enclosed in the left angle bracket (<) and right angle bracket (>). The starting tag is also known as opening tag or on-code tag. The starting tag may have some attributes. A closing tag is enclosed in angular brackets with forward slash (/) before tag name. The closing tag is also known as ending tag or off-code. The closing tag does not have attribute. For example, a html tag BODY has opening tag as <BODY> and closing tag as </BODY>. The most of the HTML tags are container tags. <HTML>, <HEAD>, <TITLE> <BODY>, , , , etc., are the container tags. A text or other tag that is needed to markup is enclosed in between starting tag and closing tag. The starting tag activates the effect and the ending tag turns off the effect. The basic structure of container tag is as given below: <Tag_name>TEXT<\Tag name> b) EMPTY TAG

An empty tag has only starting tag. It does not have ending tag. It is also known as stand-alone tag or singular tag. It does not enclose any text or tag. , <IMG> and <HR> are Empty tags. The basic structure of an Empty tag is as given below:

<TAG>

For example:

Introduction and feature of macro economics

2021-06-07T21:10:00.006+05:45

Economics is the study of how individuals, societies and nations use limited resources to meet their unlimited needs. The basic issues it studies include scarcity, choice and allocation of resources. To study these important issues of economics, economics is divided into two parts, microeconomics and macroeconomics. Vyashti is a Nepali translation of the English word Micro. The English word Micro is derived from the Greek word Mikros which means subtle or small. So individual economics studies individual or small units of the economy. Similarly, the aggregate word is a Nepali translation of the English word macro. The English word macro is derived from the Greek word makros which means big or big. So macroeconomics studies the overall unit of economics. The term micro ₹ macro was first used in economics in 1933 by Prof. Ragnar Frisch did. Since then, these two terms have been widely used and are now a major part of economics. Therefore, this chapter discusses the meaning, importance, and limitations of macroeconomics, the relationship between individual and macroeconomics, and the differences between neo-classicalism and neo-Keynesianism, and finally the various concepts of macroeconomics.

Meaning of microeconomics

The branch of economics that studies the whole economy or overall economic behavior is called macroeconomics. In other words, macroeconomics is the branch of economics that studies the total variables of the economy such as national income, price level, employment level, economic growth rate, etc. Hence it is also called aggregative economics. Macroeconomics is also called macroeconomics.

Macroeconomics deals with the study of aggregate units such as national income, total consumption, total savings, total investment, etc. It analyzes how the general price level is determined and how resources and resources are distributed throughout the economic system.

K.E. According to Boulding, "macroeconomics is concerned with national production, not with individual units, with aggregate units, not with individual income, not with national income, not with individual value, not with price level, not with individual production."

(Macroeconomics is the study of behavior of the economy as a whole. It examines the overall level of national output, employment, prices and foreign trade.)

Since macroeconomics studies the whole economy in large chunks, it is also called the lumping method. It explains how national income and employment are determined. It also analyzes the factors that cause fluctuations in the level of national income and employment. In addition, macroeconomics explains how economic growth or national income grows in any economy. As macroeconomics studies the determinants of national income and employment growth, it is also called the Theory of Income and Employment. Development of Macroeconomics J.M. Keynes The General Theory of Employment, Interest and Money "is also called Keynesian Economics since its publication in 1936.

FEATUREOFMACROECONOMICS

The characteristics of macroeconomics are as follows:

It is a study of aggregate or aggregate economic units covering the overall economy.

It studies the overall economic units like national income, inflation, unemployment, trade cycle etc.

It has to do with the behavior of the economy as a whole.

It is economical in terms of fixed relative value and distribution of limited resource

As it is used in policy making, it works to tell the right and wrong and give advice. Therefore, it is also called normative science or policy science. The main tools of its analysis are fiscal policy and monetary policy

(Monetary policy). Fiscal policy is concerned with government spending and revenue, while monetary policy is concerned with interest rates and money supply.It is also called the principle of income and employment.Its main purpose is to determine national income, employment and general price levels and to analyze the rate of change in them. The key variables to be studied are national income, total consumption, total expenditure, total investment, It was in 1936 that J.M. Book of Keynes | Since the publication of "The General Theory of Employment, Interest and Money", it is relatively

Types of pipes used in plumbing work

2021-06-07T16:55:00.003+05:45

The pipes are Circular cylinder and are used for transporting Various fluids Such as water, Stem, gas, oil and Other Chemicals from one place to another .The Use of the pipe is found in water Supply and Sewage disposal, food Processing plants. The pipe are made up large number of materials Such as Cast iron, Steel, brass, plastic etc the types of pipes used in plumbing are:

1) Cast iron pipe

- Cast iron pipe is widely used for City water distribution Systems because of its high resistance to Corrosion and Consequent long life.Cast iron pipe is made from pig iron. Such pipes are normally made from 5cm to 120 cm in diameter . Under normal Conditions, & Cast Iron Pipe Can be excepted to 100 years . 2)Galvanized iron pipe(G.I) GI Pipes are Made of mild Steel Sheet. Its length wise Joint is Welded Seam Type G I Pipes is Used to supply. Later, gas or any other liquid inside the building These type of pipes are prepared from 12mm (0.5 inches) to 15cm ( 6 inches) in diameter: They are available in 6 meter (20 feet) length

The thickness of the wall of its Sheet is different according to their diameters After Preparing this Pipe it is dipped in Zinc Solution: This action is to as Galvanizing in this way Known the Pipe is Saved from rusting 3)Wrought iron pipe These type of Pipe are like G.I Pipes. They are also used to carry I water gas or Certain Other liquid from one place to other The only different between Wrought iron pipe and GI pipe is that wrought iron pipes are prepared by welding wrought iron sheet 4) copper pipe Copper pipe are made of Small diameter Since Coper does not admit rust so there Pipe are durable However as Copper is Costly. therefore, they are used in limited Places.These types of Pipes are generally Used to bend Or Sag even at high temperature. The befits of the copper pipes is that the copper pipes are less harmful for environment and they are fire resistance. 5)Plastic pipes l These Pipes which includes rubber and P.V.C. pipes are used for the Supply of water, acidic Water and alkaline water Hot water Should not be carried Out.

These pipes are Joined using a thread Joint or Socket is Joining with a Solution. Such pipes are not rusted They are light in weight Cutting, bench bending and joining are easy for these pipes. The main advantage of plastics pipes is that the plastics pipes are less in weight, it is available in large length

Information about human heart and malaria

2021-06-07T09:08:00.002+05:45

Heart

The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system. Blood provides the body with oxygen and nutrients, as well as assisting in the removal of metabolic wastes. In humans, the heart is located between the lungs. in the middle compartment of the chest.

In humans, other mammals, and birds, the heart is divided into four chambers: upper left and right atria: and lower left and right ventricles. Commonly the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart. Fish, in contrast, have two chambers, an atrium and a ventricle, while reptiles have three chambers. In a healthy heart blood flows one way through the heart due to heart valves, which prevent backflow. The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium, and endocardium.

The heart pumps blood with a rhythm determined by a group of pacemaking cells in the sinoatrial node. These generate a current that causes contraction of the heart, traveling through the atrioventricular node and along the conduction system of the heart. The heart receives blood low in oxygen from the systemic circulation, which enters the right atrium from the superior and inferior venae cavae and passes to the right ventricle. From here it is pumped into the pulmonary circulation, through the lungs where it receives oxygen and gives off carbon dioxide. Oxygenated blood then returns to the left atrium, passes through the left ventricle and is pumped out through the aorta to the systemic circulation-where the oxygen is used and metabolized to carbon dioxide. The heart beats at a resting rate close to 72 beats per minute. Exercise temporarily increases the rate, but lowers resting heart rate in the long term, and is good for heart health. Malaria

Malaria is a life-threatening disease. It's typically transmitted through the bite of an infected Anopheles mosquito Infected mosquitoes carry the Plasmodium parasite. When this mosquito bites you, the parasite is released into your bloodstream.Once the parasites are inside your body, they travel to the liver, where they mature. After several days, the mature parasites enter the bloodstream and begin to infect red blood cells. Within 48 to 72 hours the parasites inside the red blood cells multiply, causing the infected collect to burst open. The parasites continue to infect red blood cells, resulting in symptoms that occur in cycles that last two to three days at a time. Malaria is typically found in tropical and subtropical climates where the parasites can live. The World Health Organization (WHO) states that, in 2016, there were an estimated 216 million cases of malaria in 91 countries.

What are the symptoms of malaria?

The symptoms of malaria typically develop within 10 days to 4 weeks following the infection. In some cases, symptoms may not develop for several months. Some malarial parasites can enter the body but will be dormant for long peroid of time.

Common symptoms of malaria include: can range from moderate to severe

shaking chills that

high fever

headache

vomiting

diarrhea

muscle pain

Coma

profuse sweating

nausea

abdominal pain

anemia

convulsions

bloody stools

Online earning within some days

2021-05-18T21:43:00.007+05:45

Online earning is increasing day by day across all over the world. There are various platforms available for online earning like YouTube, blogging, etc . In the name of online earning many frauds is happing all over the world. There are various fraud sites available on the internet. Many people want to earn money from online so they gave their details of their bank account on that site and the site owner may misuse the detail and your bank account may be hacked. To prevent from these frauds you should take the complete details from the internet and do not give your detail information on unknown sites.

The trusted platforms for the online earning is shown below:

1) youtube: it is the most trusted and popular app all over the world. Many people are engaging in this platforms day by day to earn money through this platform. We should make a videos for this platform with our own contant. If you copy other content they you may get the copy right strikes.

In this platform all your videos and content will be monitized if you able to gain the 1000 subscriber and 4000 watch time which is really hard to make. Many gaming YouTubers streamed their gaming on this platform and earn money. This platform is so strict the YouTubers should follow the youtube polices or termed and condition. Income in this platforms depend upon the views on videos. 2) Freelancing: It is the another platforms where you get variety of job according to your skill like artical writing, data entry, video editing , thumbnail making for youtube videos etc. To work in this platforms you should make a freelancing account and then you should search job according to your skill and then place a "BID" on the work . The owner of the job message to give you work . If you can complete the work in a given time you can earn money. In this way we can earn from this platforms. 3) Blogging: this site is another another source of online earning . In this platform we can earn money by making a blog or writing artical on different topic or contant. Many people earns money by blogging . In this field you needed hard work just like on youtube . To earn the money from the blogging you need send approval to the google AdSense after the aproval of google adsense your blog will be monitized . The income on blogging depends upon the traffic source or views. 4) Affilate marketing : this is also the another site to earn the money online by selling the product online . In affilate marketing we have to promote the product through our site. If anyone purchase the product clicking the link through our page we get a commission from the company. In this way the affilate marketing is done. Many people earn money from this site 5 ) selling good and product online : It is also the another method to earn the money online. Many people want to buy a product online instead of going shop in these case online selling of good is needed. Company like amazon,flipcart run their online selling goods and product . This business is very easy realiable for customer. 6) creating website for advertisement it is also the another source of making money online by doing advertisement through our website. Many people's want to advertise their product in a attractive way in order to attract the customer . You can earn money through this method also. 7) online teaching:

there are various platforms for the teacher also they can teach the students through the virtual class and earn money . Many teacher make a video and post on learning platforms like Byjuj'S and many other platforms to earn money. These are some online platforms through which we can earn money online .

Top 5 android games on goggle play store

2021-05-17T17:57:00.006+05:45

it is the ganeration of games there are various games available in play store . Many developers developed the various games for the entertainment of people and earn money . Many people like to play the games when they get bored now let's discuss about the most popular android games which is available in playstore .

1) PUBG(player unknown battle ground )

It is the most popular games around world many people around the world like to play this games due to the high graphics and sensitivity .

It is available on the play store easily . This game need high RAM and processer. There are many international tournaments organized for this game. This is a battle game in which we can play with our friends . In this game we can play in the three mode i.e solo mode,Duo mode and squad mode. In this games different map are available to play it is highly popular around the world. It has 100M+downloads on google play store. This game is play among 100 people's among them who can survive till the end they become the winner or they get the "chicken dinner"

2) FREE FIRE : the full name of this game is garena freefire. This game is made by the garena company . This game is similar to the PUBG mobile . This game is for those people whose mobile RAM Doesnot support the pubg. It can work on 2 GB or 3 GB ram. It also become popular now a days. Many pople enjoy this game . We can play this game in three mode i.e solo mode, duo mode , and squad mode . The solo mode is for only one player and duo mode is for two player and squad mode is for 4 player . The winner should survived till the end of the game to get the "Booyah". This game has also different modes for playing with friends. This is the game which is mostly streamed by the YouTubers now days . 3) CLASH OF CLAN : it is the another most popular game which is available in goggle play store . This game is related to war . This game is very interesting . Before the game like PUBG and FREE FIRE this game is most popular around the world. In this game we have to create or join clane to start a war those clan who got maximum stars in war wins the war. The clan leader choose a player for a war . There are various characters are available in this game. This game has 500M+Downloads on goggle play store. This game never get old most of the people used to play this game now days. This game is suitable for young generation people's .

4) CANDY CRUSH SAGA : it is the most popular game across the world. Many people around the world used to play this game. It is the offline game but now a days it can be also play in online mode. There are infinite level are available in this game due to the many people used to play this game for time pass or entertainment . In this game we have to match the similar candy in the limited moves. If you can able to match all the jelly in the gives moves then you complete the level and reach to another level . It is more interesting game . all generation people can play this game . It has 1B+ downloads on google play store.

5) REAL CRICKET 20: this game is dedicated to all cricket lover. this game is interesting and realistic . This is a cricket game which is available in play store . This game can be play in both modes online and offline . in this game which have to select our country for a cricket game and then we have to select the opponent team for a game . This is most popular game nowadays . This game is also provide better graphics and sound. This game provide the real cricket player name . This is the special feature of the game . These are some android games which can we play on our mobile phone. There are various android games available on google play store you can search and play and enjoy. You can make your own game through the progamming language .

Tips for Starting a cow farming

2021-05-15T22:19:00.002+05:45

Cow farming is the class of agricultural field in which many cows wear rear for the dairy product like milk , ghee, curd , butter and many other product . This is mostly done in countries like nepal, america , australia etc. people who are engaging in this field are increasing day by day. In this field people need more hardwork . The product which is obtained from cow farming can be sell and earn money.

Many people want to start this farming. before starting this farming we need the follow things. 1) information about cow farming: before starting cow farming we need sufficient information about cow farming. We can gain information about the profits , obstacles , material needed for starting a cow farming . 2) investment for cow farming: 1st of all we need some investment for starting the cow farming. Without some investment cow farming is seems impossible. To start this farming to should save income and then started a farming. Buy some cows and start work in this field. 3) making shade for cows : It is also another important things that we need before starting the cow farming . We need a shad for cows to keep them safe from rain . 4) transportation availability : it is also the another important things that we need before starting cow farming to supply the product that we obtained from the cow farming to the consumer. This are some important things that we need before starting farming. The profit in this field depends upon the hardwork of owner. There are many challenges arises in this field some of the diffculties are . 1) To maintain the health of a cow : this is the difficulty that arise in cow farming . The owner should check the health of a cow in regular time to protect them form diseases .if the cow is unhealthy then it cannot able to give the sufficient milk to the owner . 2) To deliver the product in time : It is also the another challenge for the owner so the worker should get up early in the morning to deliver the product like milk to satisfied the consumer.

3) To keep the milk product safe: It is also the another challenge for the farm worker to keep the product safe without damages . Consumer donot purchase the damage product so that in order to earn money the farm worker should keep milk product safe .

This are some challenges that arises in the cow farming . This challenge should be faced by a worker. The method for the production of good milk are - 1) give grass, water to cow in regular interval of time . 2) allow cow for grazing in ground so that they can eat the grass easily. 3) Give protin or vitamin to cow for increasing the strength to fight against disease 4) clean the cow dunk regularly in appropriate way so that it doesnot produce bad smell. This are some method to increase milk production. Now let's talk about the benefits of cow farming . =Benefits of cow farming : 1) We can get sufficient milk and milk product to eat and drink. 2) Due to the daily consumption of milk and milk product it improve the immunity powe system of human. 3) we can get free manure from the cow dunk which increased the fertility of a soil. 4) Due to the more fertile soil it increased the crop production. Cow farming for the most of the people seems beneficial at all.

Detail information about corona virus and its preventive measure

2021-05-14T21:35:00.010+05:45

Corona virus is a very harmful virus or disease which is commonly called COVID-19 and cause the illness in the respiratory system in human beings .It is newly evolved virus which is rapidly spread around the world .Many people's across the world loss their life due to this virus . The origin of this virus is from the chine country in "Wuhan" city in december 2019. when this virus spread all over the world the World Health Organizations (WHO) declared this virus as a COVID -19. till Now scientist and researcher are not able to find its vaccine or anti-dot but the research is continued . Many people's across the world loss their family and friends . Due to the excessive spread of this virus all the governments across the world where the corona cases are increasing announced "Lockdown" . In the situation of lockdown people's are not allowed to come outside from the home . So that they can be safe from this virus. All the industrial , educational , business are stoped due to this pandemic . In this pandemic period technology play the important role like laptop, internet,mobile so that people can get the update of corona cases through that and spend time by watching movies , playing games etc. Impact of COVID -19 on different sector After spreading Novel corona virus (covid-19) all over the world . This virus affect on different sector around the world some of the sectors are as given below: 1) IMPACT ON ECONOMICAL SECTOR:

In this pandemic period all the business , industries,factories are closed due to this virus. When all the industries and factories are closed they it decrease the global economy of a factory and industry or business across the world. According to the economist they said that " if this virus is stay for a long period of time then the global economy will be destroyed ". so this virus are adversely affect on global economy. In the highly advanced countries like america ,japan,china they can run their industry and factory through different medium but for the poor countries like nepal, bhutan ,Afghanistan they have to go to work in factory and industry . They have no resource for this to work in factory . 2) IN EDUCATIONAL SECTOR In this situation of Corona virus all the government of there own country inform people about closing of school,institution ,collage and university . Many student are learning form the virtual class organized by their school or collage. So that there is no risk for student when they learn from their home. These are some factor which is extremely affected. Now lets discuss about the cause of this virus ÷ # the actual cause of this virus is not identify by the scientist . But the research is going on to study this virus in detail. SYMPTOMS OF THE CORONA VIRUS 1) High grade fever or Low grade fever: - when the corona virus enter the body of human through the different medium then the people may suffer form fever . It depends upon the stamina of people. 2) TIREDNESS It is the another symptoms of corona virus in which the people feel really tired of doing something . They feel sleepy every time. 3) DRY COUGH: It is the another symptoms of the corona virus in which the dry cough is seen in people's . people's should use hot water for drinking and eat soap. 4)HEADACHE headache is the another symptoms of the corona virus in which the people's head is paining . 5)DIARRHEA : It is the another symptoms of the corona virus in which a person go regular toilet . In this condition Stool of a person is extremely thin as compare to other normal days . 6)CHEST PAIN :Chest pain is the condition in which the person feel pain in the chest. But the chest in pain is also the symbol of heartattack so do the PCR test to determine corona . In the above we discuss about the symptoms of the corona virus now let's talk about the preventive measure for corona virus. PREVENTIVE MEASURE FOR COVID-19 1) DOING REGULAR EXERCISE. Doing regular exercise in the early morning make human body healthy and fit. exercise make the immunity system better. It keep mind fresh and provide strength to fight against this virus. 2) KEEP SOCIAL DISTANCING: Social distancing keep all the people's from spreading the virus. This virus is highly spread where there is gathering of more people so every people should make 2 m distance from each other. 3) USE OF MASK : Proper use of mask can protect the human beings from the corona virus we should cover our under a mask in appropriate way. You can easily get this mask near the medical shop. Mask should be used in such place where there is maximum crowd. 4)REGULARLY CLEAN HAND AND USE SENITIZER To protect from the corona virus we should wash our hand regularly and use senitizer. Whenever we go outside we do handshake with other people so that the virus is transfer to our hand so to kill the viruses and germs from our hand we should use sentizer. These are some preventive measure from the corona virus(COVID-19) regularly follow these preventive measure to protect yourself and your family. Spend time with your family members in the lockdown . Everything will be okey at the end be clalm . Eat sufficient vegetable and fruits to improve immunity power

application area ,merits and demerits of technology.

2021-05-13T16:52:00.008+05:45

Technology is the scientific knowledge to a new device and machine two facilitate humans.it has made our life so easy and comfortable and has given us so many facilities which we could never have imagined before. the word Technology from drive from two Greek words" techno" and "logos". Techno means skilled required to craft something and "logos" means to study .All the things that we use in daily routine like internet ,cars, air condition, mobile, laptop etc. through the use of Technology we can take more benefits. Technology play the important role in the development of the state or country .due to the development of technologies it also help to develop the manpower to control the technologies. Technology becomes the part of human life. Technology is mostly used in various field such as: 1) IN EDUCATION:

school is the place where every gets knowledge . technology play the important role in the educational field. Many students and teachers use the technology for the teaching and learning process . In the educational field the technologies like mobile,computer, and laptop play the important role. Many machines and devices are placed in engineering and medical field so that they can develop a manpower . In the situation of COVID-19 technology helps many students and teacher through the virtual class . It is only possible due to the technology. Like mobile,laptop, internet etc. 2) IN BANK:

Bank is the place where many people create accounts to keep their money safe. The use of technology also play important role in this field also all the work process in the bank are done through the computer which is an example of technology.many people send and receive money from one place to another or one country to another country easily . Bank provided the ATM machine everywhere through which we can withdraw the money if we need. 3) INDUSTRIES AND FACTORIES

There are various industries and factories around the world. They use different technological tools and machine for the packing of the product. Technology in the industry or factory play the Vital role. There are lots of work in the factory which cannot done by the single people various machines and tools are used to finish the work in a certain period of time. so that it save the time of the worker. it make the work easier and comfortable. In the past it is very difficult to do job because the machine are not available at that time . But now's a days all the work are done by machine automatically in short period of time. 4)TRANSPORTATION: in the past there wear no facility of transportation people used animals as a source of transportation for the various purpose . But nowadays there is variety of transportation facility available around the world . People can go one place to another place easily using the transportation system like bus, car,motercycle, plane etc. Many people's were busy in their own work to to save the time they use the transportation . This technology made the human life easy and comfortable . 5) IN DAILY LIFE

Now a days technology is used in our day to day life . Such as television , laptop, internet for the entertainment purpose and we use mixture , toaster and many other technology in our homes . Without the use of technology our life become incomplete . Every things has its positive side and negetive side . Now let's talk about the merits and of use of technology. Merits of using technology : 1) technology helps to finish the work in short period of time without human effort 2) it helps to gain the more information through the internet with mobile or laptop. 3) ) It help to increase the industrial output 4) it helps in growing business through the advertisement in different sites. 5) it make transportation system more easy and reliable. 6) It helps to improve communication Demerits of using technology 1)Technology make people less active because all the work are done with machine 2) Many people are died due to the various technology around the world. 3) Many people around the world become jobless due to the automatic machines and tools . 4) Reduces the face to face communication among the families. 5) Due to the gaming technology many children's are always busy in playing online games instant of outdoor games. 6) Many harmful weapons and gun is made due to variety of technology . As we are discussing about the demerits of technology but as compare to whole technology seems beneficial for the human beings . The use of technology depends upon the people .