- •А.А. Атрошкина, к.Ф. Варламова, и.А. Ислентьева
- •Новокузнецк
- •Contents предисловие 4
- •Предисловие
- •Lesson 1. Energy
- •Active Vocabulary
- •I . Practise reading the words written below. You’ll come across them in text 1 a.
- •II. Put the words from the box into the correct columns below. Translate them into Russian.
- •III. Read text 1 a. Try to understand its content. Text 1 a. Energy
- •Post-Text Exercises
- •IV. Find the word with the similar meaning, according to the idea of text 1 a.
- •V. Connections: match a line in a with a line in b.
- •VI. Read and translate word combinations consisting of two or more components. See model. Read and translate the sentences from the text containing these word combinations.
- •VII. Answer the following questions.
- •VIII. Are the sentences True or False? Correct the false sentences.
- •Grammar Exercises (The Tenses: Active and Passive Voice. See appendix, gr. Ref., p. 97-99)
- •X. Find the correct sentences. Underline the predicates. Trans-late the sentences into Russian.
- •XI. Choose the correct tense form. Translate sentences into Russian, pay attention to the meaning of the word “time”.
- •XII. Put the verbs in brackets into the correct tense and voice.
- •XIII. Find active and passive forms of the verb in text 1 a. Write them out into two columns.
- •XIV. Read text 1 b. Find the answers in text 1 b to the following questions:
- •Text 1 b. Generators
- •XV. Make the plan of the given text.
- •XVI. Discuss the main points of your plan with a partner.
- •XVII. Skim over text 1c (See appendix, lang. Learn. Focus, p. 117). Give a better title for this text and prove your point of view. Text 1 c. Batteries
- •Lesson 2. Atomic energy
- •Active Vocabulary
- •I . Practise reading the words written below. You’ll come across them in text 2 a.
- •II. Put the words from the box into the correct columns below. Translate them into Russian.
- •III. Read text 2 a. Try to understand its content. Text 2 a. Atomic Energy
- •Post- Text Exercises
- •IV. Find the word with the similar meaning, according to the idea of text 2 a.
- •V. Connections: match a line in a with a line in b.
- •Grammar Exercises (Modal Verbs and Their Equivalents. See appendix, gr. Ref., p. 100-102)
- •XI. Read the following sentences. Find the sentences in which the modal verb ‘must’ expresses supposition. Translate them into Russian.
- •XII. Find the sentences with modal verbs in text 2 a (passages 2 and 3). Change these modal verbs to their equivalents. Translate the sentences into Russian.
- •XIII. Fill in blanks with the appropriate modal verb or its equivalent. Mind the tense.
- •XIV. A. Read the conversation. Choose the correct modal verb.
- •XV. Read text 2 b. Find the answers in text 2 b to the following questions:
- •Text 2 b. The Law of Energy Conservation
- •XVI. Read text 2 b using some more information about well known more physicists mentioned in the text.
- •1895 World War II 1913 1896 1931 1896-1912 1898 1946 1922 text 2 c. History of Radiography: X-rays, Gamma Rays
- •Gamma rays
- •Lesson 3. Electricity
- •Active Vocabulary
- •I. Practise reading the words written below. You’ll come across them in text 3a.
- •II. Put the words from the box into the correct columns. Translate them into Russian.
- •III. Read text 3a. Try to understand its content. Text 3 a. Electricity
- •IV. Find the word with the similar meaning, according to the idea of text 3 a.
- •Post-Text Exercises
- •V. Connections: match a line in a with a line in b.
- •VI. Match paragraphs with the appropriate summary.
- •VII. Answer the following questions.
- •VIII. Translate the parts of the sentences. Complete these sentences.
- •IX. Give a short report on the topic “The discovery of electricity and its usage today”. (Use text 3a).
- •X. Find the correct sentences. Underline the participles. Translate these sentences into Russian.
- •XII. Find the participles (passage 3) in text 3 a. Define the functions of the participles.
- •XIII. Translate the following sentences into Russian, pay attention to the Absolute Participle Construction. Underline “the doer” in the construction.
- •XIV. Form one sentence of each pair of sentences using the Absolute Participle Construction.
- •XV. Read text 3 b. Find the answers in text 3 b to the following questions:
- •Text 3 b. Transformers
- •XVI. Complete the sentences using the correct variant.
- •XVII. Make a short summary of the text (See appendix, lang. Learn. Focus, p.117-118).
- •XVIII. Read text 3 c. Describe the process of electric current flow in a vacuum in your own words. Text 3 c. Electric Current In a Vacuum
- •Lesson 4. Power transmission
- •Active Vocabulary
- •I. Practise reading the words written below. You’ll come across them in text 4 a.
- •II. Put the words from the box into the correct columns. Translate them into Russian.
- •III. Read text 4 a. Try to understand its content. Text 4 a. Power Transmission
- •Post-Text Exercises
- •IV. Find the word with the similar meaning according to the idea of text 4 a.
- •V. Connections: match a line in a with a line in b.
- •VI. Match each paragraph with the appropriate summary:
- •VII. Answer the following questions.
- •VIII. Translate the parts of the sentences. Complete these senten-ces.
- •X. Underline the gerund and define the forms of it in the examples given below. Translate the sentences into Russian.
- •XI. Put the verbs in brackets into the correct forms of the gerund. Define the functions of the gerund. Translate the sentences into Russian.
- •XII. Find the gerund (paragraph 3) in text 4 a. Define the functions of the gerund.
- •XIII. Translate the following sentences into Russian, pay attention to the Gerundial Complex.
- •XIV. Use Participle I, Participle II or the Gerund of the verbs in brackets and translate the sentences.
- •XV. Translate the following sentences and define the non-finite forms of the verb.
- •XVI. Read text 4 b. Find the answers in text 4 b to the following questions:
- •Text 4 b. Electric Power Consumers and Power Systems
- •XVII. Complete the sentences using correct variant.
- •XVIII. Describe a power system and its operation.
- •XIX. Read text 4 c. Find in it the answer to the question that follows it. Text 4 c. Electric Power Interruptions
- •Lesson 5. Electronics
- •Active Vocabulary
- •I. Practise reading the words written below. You’ll come across them in text 5 a.
- •II. Put the words from the box into the correct columns below. Translate them into Russian.
- •III. Read text 5 a. Try to understand its content. Text 5 a. Electronic Elements
- •Post-Text Exercises
- •IV. Find the word with the similar meaning according to the idea of text 5a.
- •V. Connections: match a line in a with a line in b.
- •VI. Find in the text the Russian equivalents of the following words and word combinations:
- •VII. Read and translate word combinations consisting of two or more components. See model. Read and translate the sentences from the text containing these word combinations.
- •VIII. Answer the following questions:
- •IX. Read the definitions below and guess what word is defined in each case.
- •X. Use the verb in parentheses in the correct form with the appropriate preposition. Translate the sentences into Russian.
- •XI. Fill in the gaps in the sentences using the correct form of the word in parentheses:
- •XII. Look through text 5 a again. Give main points of each passage. Use “is / are about …”. See Model. Make an annotation of the text (See appendix, lang. Learn. Focus, p.118)
- •X can be used for … It is made of …
- •Grammar Exercises (The Infinitive. The Functions of the Infinitive. The Infinitive Construction. The Complex Object. The complex Subject. See appendix, gr. Ref., p. 107-110)
- •XIV. Translate the following phrases from English into Russian.
- •XV. Underline the Infinitives in the sentences. Define their func-tions. Translate the sentences into Russian.
- •XVI. What forms of the Infinitives are used in the Infinitive Complexes given below – Complex Subject or Complex Object?
- •XVII. Translate the following sentences from Russian into English using the phrases from ex. 1.
- •XVIII. Read text 5 b and fill in the gaps with the words, in the box. Try to guess the meaning of the words from the context.
- •Text 5 b. Electronic Devices
- •Text 5 c. The Microelectronic Revolution
- •Lesson 6. Electronic devices: amplifiers, diodes, oscillators
- •Active Vocabulary
- •I. Practise reading the words written below. You’ll come across them in text 6 a.
- •II. Put the words from the box into the correct columns below. Translate them into Russian.
- •III. Read text 6 a. Try to understand its content. Text 6 a. Amplifiers
- •Post-Text Exercises
- •IV. Find the word with the similar meaning according to the idea of text 6a.
- •V. Complete the following. Use the words in the box to help you.
- •VI. Read and translate word combinations consisting of two or more components. See model. Read and translate the sentences from the text containing these word combinations.
- •VII. Answer the following questions:
- •VIII. Match the English words in column a to their Russian equivalents in column b:
- •IX. Below are some figures you know from your science classes. In groups, look at them carefully and match figures with their descriptions.
- •Grammar Exercises (Word Order in a Simple Sentence. Negative Simple Sentence. Word Order in Interrogative Sentences. See appendix, gr. Ref., p. 111-114)
- •XIV. Translate the following sentences into English paying atten-tion to the word order.
- •XV. Read text 6 b. Find the answers in the text to the following questions:
- •Text 6 b. Diodes
- •XVI. Fill in the correct word from the list below.
- •XVII. Discuss the main points of the text. Use this plan.
- •XVIII. Read text 6 c and complete these sentences using ideas from the text.
- •Text 6 c. Requirements For Oscillators
- •Additional reading the world of the atom
- •Natural radioactivity
- •How long does the radioactivity last?
- •Plants and the atom
- •Animals and the atom
- •Telemeters in the atomic laboratory
- •Atomic power for rockets
- •Atomic power for space travel
- •The first russian woman-scientist (1850 —1891)
- •James clerk maxwell (1831–1879)
- •The use of electromagnetic waves
- •A great invention of a russian scientist
- •Astronomy and radio
- •How can the efficiency of utilisation of solar energy be improved?
- •Solar energy
- •Electronics and technical progress
- •Mysterious devices or not
- •Lasers help science and industry
- •Atomic clock puzzles scientists
- •Development of robots
- •Electric fish
- •Machines aren’t free of errors
- •Automation and mechanization
- •Appendix
- •Grammar reference
- •Lesson 1
- •Система английских времен – The Tenses
- •Действительный залог – Active Voice
- •Страдательный залог – Passive Voice
- •Lesson 2 Модальные глаголы и их эквиваленты – Model Verbs and Their Equivalents
- •Lesson 3
- •Формы причастия I
- •П ричастие I переводится на русский язык
- •Функции причастия I
- •Причастие II Образование и формы причастия II
- •П ричастие II переводится на русский язык
- •Функции причастия II
- •Независимый причастный оборот (нпо)
- •Lesson 4
- •Формы герундия
- •Функции герундия. Способы его перевода
- •Герундиальный оборот
- •Lesson 5
- •Инфинитив
- •Инфинитив как часть сложного дополнения
- •Инфинитив в конструкции сложное дополнение употребляется:
- •Инфинитив как часть сложного подлежащего
- •Lesson 6 Простое предложение
- •Порядок слов в простом повествовательном предложении. Утвердительная форма
- •Отрицание в простом повествовательном предложении
- •Порядок слов в вопросительном предложении
- •1. Альтернативные и общие вопросы
- •2. Специальные вопросы
- •Построение специальных вопросов с предлогами
- •I вариант
- •II вариант
- •Irregular verbs
- •Language learning focus skimming
- •Writing a summary
- •Make sure you understand all the main points. Go through the article and underline the relevant information in each paragraph.
- •Writing an annotation
- •Библиографический список
- •Energy and electronics
- •654007, Г. Новокузнецк, ул. Кирова, 42
II. Put the words from the box into the correct columns below. Translate them into Russian.
addition, to conduct,
transmission, electronic, amplifier, finally, abundance, voltage,
conductive, conductivity,to insulate, perfectly, distortion, to
affect, easily, single
Noun (what/who?) |
Adjective (what kind of?) |
Verb (what to do?) |
Adverb (in what manner?) |
… |
… |
|
|
III. Read text 5 a. Try to understand its content. Text 5 a. Electronic Elements
The component at the heart of most amplifiers is the transistor. The main elements in a transistor are semiconductors, materials with varying ability to conduct electric current. Typically, a semiconductor is made of a poor conductor, such as silicon, that has had impurities (atoms of another material) added to it. The process of adding impurities is called doping. In pure silicon, all of the silicon atoms bond perfectly to their neighbours, leaving no free electrons to conduct electric current. In doped silicon, additional atoms change: tie balance, either adding free electrons or creating holes where electrons can go. Electrical charge moves when electrons move from hole to hole, so either one of these additions will make the material more conductive.
N-type semiconductors are characterized by extra electrons (which have a negative charge). P-type semiconductors have an abundance of extra holes (which have a positive charge).
Let’s look at an amplifier built around a basic bipolar-junction transistor. This sort of transistor consists of three semiconductor layers – in this case, a P-type semiconductor sandwiched between two N-type semiconductors. This structure is best represented as a bar, as shown in the diagram below (the actual design of modern transistors is a little different).
The first N-type layer is called the emitter, the P-type layer is called the base and the second N-type layer is called the collector. The output circuit (the circuit that drives the speaker) is connected to electrodes at the transistor’s emitter and collector. The input circuit connects to tie emitter and the base.
The free electrons in the N-type layers naturally want to fill the holes in the P-type layer. There are many more free electrons than holes, so the holes fill up very quickly. This creates depletion zones at the boundaries between N-type material and P-type material. In a depletion zone, the semiconductor material is returned to its original insulating state – all the holes are filled in, so there are no free electrons or empty spaces for electrons, and charge can’t flow. When the depletion zones are thick, very little charge can move from the emitter to the collector, even though there is a strong voltage difference between the two electrodes.
You can change this situation by boosting the voltage on the base electrode. The voltage at this electrode is directly controlled by the input current. When the input current is flowing, the base electrode has a relative positive charge, so it draws electrons toward it from free emitter. This frees up some of the holes, which shrinks the depletion zones. As the depletion zones are reduced, charge can move from the emitter to the collector more easily – the transistor becomes more conductive. The size of the depletion zones, and therefore the conductivity of the transistor is determined by the voltage at the base electrode. In this way, the fluctuating input current at the base electrode varies the current output at the collector electrode. This output drives the speaker.
A single transistor like this represents one ‘stage’ of an amplifier. A typical amplifier will have several boosting stages, with the final stage driving the speaker.
In a small amplifier – the amplifier in a speaker phone, for example – the final stage might produce only half a watt of power. In a home stereo amplifier, the final stage might produce hundreds of watts. The amplifiers used in outdoor concerts can produce thousands of watts.
The goal of a good amplifier is to cause ES little distortion as possible. The final signal driving the speakers should mimic the original input signal as closely as possible, even though it has been boosted several times.
This basic approach can be used to amplify all kinds of things, not just audio signals. Anything that can be carried by an electrical current (radio and video signals, for example) can be amplified by similar means. Audio amplifiers seem to catch people’s attention more than anything else, though. Sound enthusiasts are fascinated with variations in design that affect power rating, impedance and fidelity, among either specifications.