- •И.Н. Федотова
- •Старый Оскол 2011
- •Содержание
- •Введение
- •Содержание учебной дисциплины Аудирование
- •Говорение
- •1. Ответьте письменно на следующие вопросы:
- •Text 2. Ohm's Law
- •Solve the following problems using the formulas of Ohm’s Law:
- •Pair work. Make up similar problems of your own. Ask your groupmate to solve them.
- •Complete these sentences using the correct variant:
- •2. Answer the following questions:
- •Text 4. Conductors and Insulators
- •1. Find answers to these questions in the text above:
- •2. Complete the sentences using the correct variant:
- •Text 5. Electric generators and motors
- •Text 6. D.C. Electric motors
- •Text 7. A.C. Electric motors
- •Put English equivalents to the following:
- •1. Complete these sentences using the correct variant.
- •2. Put down the Russian for:
- •3. Answer these questions:
- •Text 9. Substations
- •1. Complete the sentences using the correct variant:
- •2. Pair work. Put these questions to your groupmate, and ask him/her to answer them.
- •3. Put down the Russian equivalents of these word combinations. Translate them back into English.
- •1. Complete the sentences using the correct variant:
- •2. Pair work. Put these questions to your groupmate and ask him/her to answer them:
- •3. Put down the Russian equivalents of these word combinations. Then translate them back into English.
- •Text 11. Atomic Power Plant
- •1. Complete the sentences using the correct variant:
- •2. Pair work. Put these questions to your groupmate and ask him/her to answer them:
- •Unit 2. Material science and technology. Metallurgy Text 1. Metals
- •1. General understanding:
- •2. Find the following words and word combinations in the text:
- •3. Complete the following sentences:
- •4. Translate into English:
- •Text 2. On metals
- •Text 3. Steel
- •1. General understanding:
- •2. Find the following words and word combinations in the text:
- •Text 4. Methods of steel heat treatment
- •1. General understanding:
- •2. Translate into English the following words and word combinations:
- •Text 5. Ferrous metals
- •Translate into English the following words and word combinations:
- •Text 6. Non-ferrous metals and non-metallic materials
- •Text 7. Copper
- •Translate into English the following words and word combinations:
- •Text 8. Aluminium
- •Translate into English the following words and word combinations:
- •Unit 3. Metalworking Text 1. Mechanical properties of materials
- •1. General understanding:
- •2. Find the following in the text:
- •3. Translate into English the following sentences:
- •Text 2. Mechanical Properties of Materials
- •1. General understanding:
- •2. Find the following words and word combinations in the text:
- •3. Translate into English the following:
- •Text 3. Metalworking and metal properties
- •1. General understanding:
- •2. Find the following in the text:
- •3. Translate into English:
- •Text 4. Welding
- •1. General understanding:
- •2. Find the following words and word combinations in the text:
- •Text 5. Other types of welding
- •Resistance Welding
- •1. General understanding:
- •3. Translate into Russian:
- •Unit 4. Engineering Text 1. Machine-tools
- •Text 2. Lathe
- •1. General understanding:
- •2. Find English equivalents in the text:
- •3. Translate into English:
- •Text 2. Milling machine
- •Drilling and Boring Machines
- •Shapers and Planers
- •Grinders
- •1. General understanding:
- •2. Translate into English:
- •Text 4. Dies
- •Wiredrawing Dies
- •Thread-Cutting Dies
- •1. Find English equivalents in the text:
- •2. Translate the following sentences into Russian:
- •Text 6. Cranes
- •Vocabulary unit 1
1. Find answers to these questions in the text above:
1. What materials are called conductors?
2. What is the advantage of copper compared with silver?
3. What is the most common function of wire conductors?
4. Why is a minimum voltage drop produced in copper conductors?
5. What is the relation between the value of resistance and the temperature in carbon?
6. What materials are called insulators?
7. What are the most common insulators?
8. What are the two main functions of insulators?
2. Complete the sentences using the correct variant:
1. Insulators are materials having a) low resistance.
b) high resistance.
2. Current passes through conductors a) easily.
b) with great difficulty.
3. Copper and silver are a) common conductors.
b) common insulators.
4. Air, paper and plastics are a) common insulators.
b) common conductors.
5. In case a high voltage is applied to. a) it does not conduct current
an insulator b) it conducts current.
6. Insulators are used a) to store electric charge.
b) to reduce voltage.
c) to prevent a short between conducting
wires
8. Carbon decreases its resistance a) when the temperature increases.
b) when the temperature decreases.
9. Metals have a) a positive temperature coefficient of
resistance
b) a negative temperature coefficient of
resistance
Text 5. Electric generators and motors
A device for converting mechanical energy into electric energy is called a generator. The function of a motor is just the reverse, that is, it transforms electric energy into mechanical-energy. The enormous energy of steam engines, gas engines, and water turbines can now be transformed into electricity and transmitted many miles. The generator has revolutionized modern industry by furnishing cheap electricity.
The essential parts of a generator are: a) the magnetic field, which is produced by permanent magnets or electromagnets; and b) a moving coil of copper wire, called the armature, wound on a dram.
D. с generators are used for electrolytic processes. Large d. c. generators are used in certain manufacturing processes, such as steel making. Generators of small capacities are used for various special purposes, such as welding, automobile generators, train lighting, communication-systems, etc. –