My future speciality is a work with electric equipment application.
Я выбрал эту специальность не только из-за дефицита в инженерах этого профиля, но и из-за интереса к ней.
I have chosen this speciality not only because of deficiency in the engineers of this structure, but also because of interest to it(her).
Электрическая энергия подобна воде, которая течёт в реках по пути наименьшего сопротивления и без которого жизнь современнго человека невозможна.
The electrical energy is similar to water, which flows in the rivers on a way of the least resistance.
Однако Электричество приносит не только пользу, но может и принести вред неграмотному человеку.
Оно будет служить нам безотказно если мы будем использовать его благоразумно.
Ведь электричество приносит в наши дома множество новых возможностей, облегчая нам жизнь.
Мы пользуемся электрическими приборами постоянно.
Мы уже не можем обойтись без привычного нам утюга, холодильника, телевизора, электрической лампы, компьютера и так далее.
Всё это – бытовое электрооборудование.
А виды промышленного, медицинского, теле- и радиооборудования оборудования и не перечесть как и его значение в жизни человека.
Безотказной работы электрооборудования добиваются люди нашей профессии.
Важность этого факта и послужила тем, что я выбрал эту профессию.
Моя будущая специальность – связана с электрооборудованием.My future speciality is an electric equipment.Я выбрал эту специальность не только из-за дефицита в инженерах этого профиля, но и из-за интереса к ней.I have chosen this speciality not only because of deficiency in the engineers of this structure, but also because of interest to it(her)Электрическая энергия подобна воде, которая течёт в реках по пути наименьшего сопротивления и без которого жизнь современнго человека невозможна. The electrical energy is similar to water, which flows in the rivers on a way of the least resistance.
Однако Электричество приносит не только пользу, но может и принести вред неграмотному человеку.Оно будет служить нам безотказно если мы будем использовать его благоразумно.Ведь электричество приносит в наши дома множество новых возможностей, облегчая нам жизнь.Мы пользуемся электрическими приборами постоянно. Мы уже не можем обойтись без привычного нам утюга, холодильника, телевизора, электрической лампы, компьютера и так далее.Всё это – бытовое электрооборудование.А виды промышленного, медицинского, теле- и радиооборудования оборудования и не перечесть как и его значение в жизни человека.
Безотказной работы электрооборудования добиваются люди нашей профессии.
Важность этого факта и послужила тем, что я выбрал эту профессию.
However the Electricity brings not only advantage, but can and harm the illiterate person.
It will serve us smoothly if we use it reasonably.
After all the electricity brings set of new possibilities in our houses, facilitating us life.
We use electric devices constantly.
We cannot do without the iron habitual to us any more, the refrigerator, the TV, an electric lamp, the computer and so on.
All is a household electric equipment.
And kinds industrial, medical, a tele- and radio equipment of the equipment and not to re-read as well as its value in human life.
People of our trade achieve non-failure operation of an electric equipment.
Importance of this fact also has served that I have chosen this trade.
My future speciality – is connected with электрооборудованием.My future speciality is an electric equipment.Я has chosen this speciality not only because of deficiency in engineers of this profile, but also because of interest to ней.I have chosen this speciality not only because of deficiency in the engineers of this structure, but also because of interest to it (her) Electric energy is similar to water which flows in the rivers by the way of the least resistance and without which life современнго the person is impossible. The electrical energy is similar to water, which flows in the rivers on a way of the least resistance.
However the Electricity brings not only advantage, but can and harm the illiterate person. It will serve us smoothly if we use it reasonably. After all the electricity brings set of new possibilities in our houses, facilitating us life. We use electric devices constantly. We cannot do without the iron habitual to us any more, the refrigerator, the TV, an electric lamp, the computer and so on. All is a household electric equipment. And kinds industrial, medical, a tele- and radio equipment of the equipment and not to re-read as well as its value in human life.
People of our trade achieve non-failure operation of an electric equipment.
Importance of this fact also has served that I have chosen this trade.
My profession is an electrician
Our life today is impossible without electricity. Computers, domestic appliances, factory machines, medical equipment, electric trains, telephone communication and all kinds of gadgets will not run if there is a power failure. There must be somebody to fix it and this person must know what to do and how to do it properly. This is what electricians do: they install, maintain and repair electrical systems and equipment.I have always been interested in electrics, and Physics and Mathematics were my favourite subjects at school, so I decided to become an electrician. Besides having basic knowledge in physics and mathematics I must study mechanics and drafting and be able to read wiring diagrams and drawings. As we know, electrical mistakes can lead to shortages, shocks, fires and costly repairs. So people who have chosen the profession of an electrician must have a good reaction, be cautious and extremely attentive.Another important aspect of this profession is being physically fit and strong: electricians often have to move heavy equipment or stand or kneel for long periods of time. It is also necessary to have keen eyesight, good hand-eye coordination and a good sense of balance.Every day electricians perform new tasks in new locations and with new people, so I think I will never get bored with this profession.Electricity consumption in our country is increasing every year due to the development of technology and emergence of new equipment that needs professional maintenance. That is why the profession of an electrician is going to stay one of the most important in our world.
Everything is made up of atoms. Each one of them has three particles: protons, neutrons and electrons. Electrons spin around the centre of an atom. They have a negative charge. Protons, which are in the centre of atoms, have a positive charge.
Normally, an atom has as many protons as it has electrons. It is stable or balanced. Carbon, for example has six protons and six electrons.
Scientists can make electrons travel from one atom to another. An atom that loses electrons is positively charged, an atom that gets more electrons is negatively charged.
Electricity is created when electrons move between atoms. Positive atoms look for free negative electrons and attract them, so that they can be balanced.
Conductors and insulators
Electricity can pass through some objects better than through others. Conductors are materials through which electrons can travel more freely. Copper, aluminium, steel and other metals are good conductors. So are some liquids like saltwater.
Insulators are materials in which electrons cannot move around. They stay in place. Glass, rubber, plastic or dry wood are good insulators. They are important for your safety, because without them, you couldn’t touch a hot pan or plug in a TV set.
Electric current
When electrons move through a conductor an electric current is created. A current that always flows in one direction is called a direct current (DC). A battery for example, produces a direct current. A current that flows back and forth is called an alternating current (AC).
Electric circuits
Electrons cannot jump freely through the air to a positively charged atom. They need a circuit to move. When a source of energy, like a battery, is connected to a light bulb the electrons can move from the battery to the light bulb and back again. We call this an electric circuit.
Sometimes there are many circuits in an electrical device that make it work. A TV set or a computer may have millions of parts that are connected to each other in different ways.
You can stop the current from flowing by putting a switch into the circuit. You can open the circuit and stop electrons from moving.
A piece of metal or wire can also be used to produce heat. When an electrical current passes through such metal it can be slowed down by resistance. This causes friction and makes the wires hot. That’s why you can toast your bread in a toaster or dry your hair with warm air from a hairdryer.
In some cases wires can become too hot if too many electrons flow through them. Special switches, called fuses, protect the wiring in many buildings.
Kinds of electricity
Static electricity • happens when there is a build-up of electrons • it stays in one place and then jumps to an object • it does not need a closed circuit to flow • it is the kind of electricity you feel when you rub your pullover against an object or when you drag your feet over a carpet • lightning is a form of static electricity Current electricity • happens when electrons flow freely between objects • it needs a conductor—something in which it can flow, like a wire • current electricity needs a closed circuit • it is in many electrical appliances in our homes – toasters, TV sets, computers • a battery is a form of current electricity
How batteries work
A battery has liquid or paste in it that helps it produce electric charges. The flat end of the battery has a negative charge and the end with the bump has a positive charge.
When you link a wire between both ends a current flows. When the current passes through a light bulb electric energy is converted into light.
The chemicals in the battery keep the ends charged and the battery going. As times passes, the chemical becomes weaker and weaker and the battery cannot produce any more energy.
How electricity is produced
Generators are used to transform mechanical energy into electrical energy. A magnet rotates inside a coil of wire. When the magnet moves, an electric current is produced in the wire.
Most power stations use turbines to make the generator rotate. Water is heated to make steam, which pushes the blades of the turbine. Gas, oil or coal can be used to heat the water. Some countries build power stations on rivers, where the moving water pushes the turbine blades.
How electricity is measured
Electricity is measured in watts, named after James Watt who invented the steam engine. It would take about 750 watts to equal one horsepower.
A kilowatt-hour is the energy of 1,000 watts that work for one hour. If, for example, you use a 100-watt light bulb for 10 hours you have used 1 kilowatt of electricity.
How electricity is transported
The electricity produced by a generator travels along cables to a transformer that changes the voltage of electricity. Power lines carry the high-voltage electricity over very long distances. When it reaches your home town another transformer lowers the voltage and smaller power lines bring it to homes, offices and factories.
Electrical safety
It is important to understand why and how you can protect yourself from electrical injuries.
Electric shock occurs when an electric current passes through your body. It can lead to heart failure and can damage other parts of your body. It can also burn your skin and other body tissues.
A very weak electrical object, like a battery, cannot do any harm to you, but inside the house you have devices and machines that use 220 volts.
Most machines in your house have safety features to protect you. If something goes wrong, a special wire leads the electricity to the ground where nothing can happen.
There are also electrical dangers outside your house. Trees that touch power lines can be dangerous. Lightning has more than enough electricity to kill a person. If you get caught in a thunderstorm stay away from open fields and high places. One of the safest places is your car, because lightning will only hit the outside metal of the car.
Гость
My profession is an electrician
Our life today is impossible without electricity. Computers, domestic appliances, factory machines, medical equipment, electric trains, telephone communication and all kinds of gadgets will not run if there is a power failure. There must be somebody to fix it and this person must know what to do and how to do it properly. This is what electricians do: they install, maintain and repair electrical systems and equipment.I have always been interested in electrics, and Physics and Mathematics were my favourite subjects at school, so I decided to become an electrician. Besides having basic knowledge in physics and mathematics I must study mechanics and drafting and be able to read wiring diagrams and drawings. As we know, electrical mistakes can lead to shortages, shocks, fires and costly repairs. So people who have chosen the profession of an electrician must have a good reaction, be cautious and extremely attentive.Another important aspect of this profession is being physically fit and strong: electricians often have to move heavy equipment or stand or kneel for long periods of time. It is also necessary to have keen eyesight, good hand-eye coordination and a good sense of balance.Every day electricians perform new tasks in new locations and with new people, so I think I will never get bored with this profession.Electricity consumption in our country is increasing every year due to the development of technology and emergence of new equipment that needs professional maintenance. That is why the profession of an electrician is going to stay one of the most important in our world.
Ответ ни кто не комментировал
My future speciality is a work with electric equipment application.
Я выбрал эту специальность не только из-за дефицита в инженерах этого профиля, но и из-за интереса к ней.
I have chosen this speciality not only because of deficiency in the engineers of this structure, but also because of interest to it(her).
Электрическая энергия подобна воде, которая течёт в реках по пути наименьшего сопротивления и без которого жизнь современнго человека невозможна.
The electrical energy is similar to water, which flows in the rivers on a way of the least resistance.
Однако Электричество приносит не только пользу, но может и принести вред неграмотному человеку.
Оно будет служить нам безотказно если мы будем использовать его благоразумно.
Ведь электричество приносит в наши дома множество новых возможностей, облегчая нам жизнь.
Мы пользуемся электрическими приборами постоянно.
Мы уже не можем обойтись без привычного нам утюга, холодильника, телевизора, электрической лампы, компьютера и так далее.
Всё это – бытовое электрооборудование.
А виды промышленного, медицинского, теле- и радиооборудования оборудования и не перечесть как и его значение в жизни человека.
Безотказной работы электрооборудования добиваются люди нашей профессии.
Важность этого факта и послужила тем, что я выбрал эту профессию.
Моя будущая специальность – связана с электрооборудованием.My future speciality is an electric equipment.Я выбрал эту специальность не только из-за дефицита в инженерах этого профиля, но и из-за интереса к ней.I have chosen this speciality not only because of deficiency in the engineers of this structure, but also because of interest to it(her)Электрическая энергия подобна воде, которая течёт в реках по пути наименьшего сопротивления и без которого жизнь современнго человека невозможна. The electrical energy is similar to water, which flows in the rivers on a way of the least resistance.
Однако Электричество приносит не только пользу, но может и принести вред неграмотному человеку.Оно будет служить нам безотказно если мы будем использовать его благоразумно.Ведь электричество приносит в наши дома множество новых возможностей, облегчая нам жизнь.Мы пользуемся электрическими приборами постоянно. Мы уже не можем обойтись без привычного нам утюга, холодильника, телевизора, электрической лампы, компьютера и так далее.Всё это – бытовое электрооборудование.А виды промышленного, медицинского, теле- и радиооборудования оборудования и не перечесть как и его значение в жизни человека.
Безотказной работы электрооборудования добиваются люди нашей профессии.
Важность этого факта и послужила тем, что я выбрал эту профессию.
However the Electricity brings not only advantage, but can and harm the illiterate person.
It will serve us smoothly if we use it reasonably.
After all the electricity brings set of new possibilities in our houses, facilitating us life.
We use electric devices constantly.
We cannot do without the iron habitual to us any more, the refrigerator, the TV, an electric lamp, the computer and so on.
All is a household electric equipment.
And kinds industrial, medical, a tele- and radio equipment of the equipment and not to re-read as well as its value in human life.
People of our trade achieve non-failure operation of an electric equipment.
Importance of this fact also has served that I have chosen this trade.
My future speciality – is connected with электрооборудованием.My future speciality is an electric equipment.Я has chosen this speciality not only because of deficiency in engineers of this profile, but also because of interest to ней.I have chosen this speciality not only because of deficiency in the engineers of this structure, but also because of interest to it (her) Electric energy is similar to water which flows in the rivers by the way of the least resistance and without which life современнго the person is impossible. The electrical energy is similar to water, which flows in the rivers on a way of the least resistance.
However the Electricity brings not only advantage, but can and harm the illiterate person. It will serve us smoothly if we use it reasonably. After all the electricity brings set of new possibilities in our houses, facilitating us life. We use electric devices constantly. We cannot do without the iron habitual to us any more, the refrigerator, the TV, an electric lamp, the computer and so on. All is a household electric equipment. And kinds industrial, medical, a tele- and radio equipment of the equipment and not to re-read as well as its value in human life.
People of our trade achieve non-failure operation of an electric equipment.
Importance of this fact also has served that I have chosen this trade.
My profession is an electrician
Our life today is impossible without electricity. Computers, domestic appliances, factory machines, medical equipment, electric trains, telephone communication and all kinds of gadgets will not run if there is a power failure. There must be somebody to fix it and this person must know what to do and how to do it properly. This is what electricians do: they install, maintain and repair electrical systems and equipment.I have always been interested in electrics, and Physics and Mathematics were my favourite subjects at school, so I decided to become an electrician. Besides having basic knowledge in physics and mathematics I must study mechanics and drafting and be able to read wiring diagrams and drawings. As we know, electrical mistakes can lead to shortages, shocks, fires and costly repairs. So people who have chosen the profession of an electrician must have a good reaction, be cautious and extremely attentive.Another important aspect of this profession is being physically fit and strong: electricians often have to move heavy equipment or stand or kneel for long periods of time. It is also necessary to have keen eyesight, good hand-eye coordination and a good sense of balance.Every day electricians perform new tasks in new locations and with new people, so I think I will never get bored with this profession.Electricity consumption in our country is increasing every year due to the development of technology and emergence of new equipment that needs professional maintenance. That is why the profession of an electrician is going to stay one of the most important in our world.
Everything is made up of atoms. Each one of them has three particles: protons, neutrons and electrons. Electrons spin around the centre of an atom. They have a negative charge. Protons, which are in the centre of atoms, have a positive charge.
Normally, an atom has as many protons as it has electrons. It is stable or balanced. Carbon, for example has six protons and six electrons.
Scientists can make electrons travel from one atom to another. An atom that loses electrons is positively charged, an atom that gets more electrons is negatively charged.
Electricity is created when electrons move between atoms. Positive atoms look for free negative electrons and attract them, so that they can be balanced.
Conductors and insulators
Electricity can pass through some objects better than through others. Conductors are materials through which electrons can travel more freely. Copper, aluminium, steel and other metals are good conductors. So are some liquids like saltwater.
Insulators are materials in which electrons cannot move around. They stay in place. Glass, rubber, plastic or dry wood are good insulators. They are important for your safety, because without them, you couldn’t touch a hot pan or plug in a TV set.
Electric current
When electrons move through a conductor an electric current is created. A current that always flows in one direction is called a direct current (DC). A battery for example, produces a direct current. A current that flows back and forth is called an alternating current (AC).
Electric circuits
Electrons cannot jump freely through the air to a positively charged atom. They need a circuit to move. When a source of energy, like a battery, is connected to a light bulb the electrons can move from the battery to the light bulb and back again. We call this an electric circuit.
Sometimes there are many circuits in an electrical device that make it work. A TV set or a computer may have millions of parts that are connected to each other in different ways.
You can stop the current from flowing by putting a switch into the circuit. You can open the circuit and stop electrons from moving.
A piece of metal or wire can also be used to produce heat. When an electrical current passes through such metal it can be slowed down by resistance. This causes friction and makes the wires hot. That’s why you can toast your bread in a toaster or dry your hair with warm air from a hairdryer.
In some cases wires can become too hot if too many electrons flow through them. Special switches, called fuses, protect the wiring in many buildings.
Kinds of electricity
Static electricity
• happens when there is a build-up of electrons
• it stays in one place and then jumps to an object
• it does not need a closed circuit to flow
• it is the kind of electricity you feel when you rub your pullover against an object or when you drag your feet over a carpet
• lightning is a form of static electricity
Current electricity
• happens when electrons flow freely between objects
• it needs a conductor—something in which it can flow, like a wire
• current electricity needs a closed circuit
• it is in many electrical appliances in our homes – toasters, TV sets, computers
• a battery is a form of current electricity
How batteries work
A battery has liquid or paste in it that helps it produce electric charges. The flat end of the battery has a negative charge and the end with the bump has a positive charge.
When you link a wire between both ends a current flows. When the current passes through a light bulb electric energy is converted into light.
The chemicals in the battery keep the ends charged and the battery going. As times passes, the chemical becomes weaker and weaker and the battery cannot produce any more energy.
How electricity is produced
Generators are used to transform mechanical energy into electrical energy. A magnet rotates inside a coil of wire. When the magnet moves, an electric current is produced in the wire.
Most power stations use turbines to make the generator rotate. Water is heated to make steam, which pushes the blades of the turbine. Gas, oil or coal can be used to heat the water. Some countries build power stations on rivers, where the moving water pushes the turbine blades.
How electricity is measured
Electricity is measured in watts, named after James Watt who invented the steam engine. It would take about 750 watts to equal one horsepower.
A kilowatt-hour is the energy of 1,000 watts that work for one hour. If, for example, you use a 100-watt light bulb for 10 hours you have used 1 kilowatt of electricity.
How electricity is transported
The electricity produced by a generator travels along cables to a transformer that changes the voltage of electricity. Power lines carry the high-voltage electricity over very long distances. When it reaches your home town another transformer lowers the voltage and smaller power lines bring it to homes, offices and factories.
Electrical safety
It is important to understand why and how you can protect yourself from electrical injuries.
Electric shock occurs when an electric current passes through your body. It can lead to heart failure and can damage other parts of your body. It can also burn your skin and other body tissues.
A very weak electrical object, like a battery, cannot do any harm to you, but inside the house you have devices and machines that use 220 volts.
Most machines in your house have safety features to protect you. If something goes wrong, a special wire leads the electricity to the ground where nothing can happen.
There are also electrical dangers outside your house. Trees that touch power lines can be dangerous. Lightning has more than enough electricity to kill a person. If you get caught in a thunderstorm stay away from open fields and high places. One of the safest places is your car, because lightning will only hit the outside metal of the car.
Гость
My profession is an electrician
Our life today is impossible without electricity. Computers, domestic appliances, factory machines, medical equipment, electric trains, telephone communication and all kinds of gadgets will not run if there is a power failure. There must be somebody to fix it and this person must know what to do and how to do it properly. This is what electricians do: they install, maintain and repair electrical systems and equipment.I have always been interested in electrics, and Physics and Mathematics were my favourite subjects at school, so I decided to become an electrician. Besides having basic knowledge in physics and mathematics I must study mechanics and drafting and be able to read wiring diagrams and drawings. As we know, electrical mistakes can lead to shortages, shocks, fires and costly repairs. So people who have chosen the profession of an electrician must have a good reaction, be cautious and extremely attentive.Another important aspect of this profession is being physically fit and strong: electricians often have to move heavy equipment or stand or kneel for long periods of time. It is also necessary to have keen eyesight, good hand-eye coordination and a good sense of balance.Every day electricians perform new tasks in new locations and with new people, so I think I will never get bored with this profession.Electricity consumption in our country is increasing every year due to the development of technology and emergence of new equipment that needs professional maintenance. That is why the profession of an electrician is going to stay one of the most important in our world.
Ответ ни кто не комментировал