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4. Answer the following questions:

Ответьте на вопросы:

1. What was a major advance in the 20-th century manufacturing?

2. What is automation?

3. When is the term automation also used?

4. Can you give any examples of fixed automation?

5. What do you know about programmable automation?

Complete the text using words given below. Use each word only once.

Заполните текст, используя слова, данные ниже. Используйте каждое слово только один раз.

energy –

энергия

bending - выгибая

machineryмеханизмы, машины

utilizeиспользовать, расходовать

extract

извлекать

manufactu-re

произво-дить

skill

навык, способность

resources

ресурсы

Technology in use

In the past it was though that only man could make and 1 … tools, but now it is known that some animals have this 2 … too. Chimpanzees use pieces of wood to 3 … ants from ant-hills, while captive birds have been observed 4 … a piece of wire and using it to get food out of a tube. However, only man is able to make use of natural 5 … such as metals, and sources of 6 … such as heat and electricity, in order to 7 … sophisticated 8 … .

Unit II principles of electronics

Pre-reading

Before studying the material of this unit, read and memorize some basic and important definitions of it.

Electronics

– study and application of phenomena of electrons (as in radio, television, etc., the use of cathode ray tubes, transistors etc.).

– use of methods and machines to make industry more and more automatic, especially by means of electronic controls.

Circuit

– complete path for an electrical current;

– apparatus with sequence of conductors, valves, etc., for using an electrical current.

Conductor

– substance that conducts heat or electric current.

Current

– flow of electricity through something or along a wire or a cable.

Transistor

– electronic device, much smaller than a radio valve, used in radio sets, hearing aids, and other kinds of electronic apparatus.

Ohm

– unit of electrical resistance.

Words and Expressions to be studied:

electronic circuits

– электронные схемы

inductor

– индукционная катушка

capacitor

– конденсатор

resistor

– сопротивление

electron tube

– электронная лампа

transistor

– транзистор

radio receiver

– радиоприемник

radio transmitter

– радиопередатчик

electronic control system

– система электронного управления

electronic device

– электронное устройство

code colour

– условный цвет

fixed resistor

– постоянное сопротивление

wire-wound ceramic type

– проволочно-керамический тип

adjustable (variable) resistor

– переменное сопротивление

metal collar

– металлический хомут

contact band

– контактное кольцо

adjustment knob

– установочная ручка

screw adjustment

– установочный винт

potentiometer

– потенциометр

to handle the current

– пропускать ток

to compute the current

– рассчитать силу тока

inductance coil

– катушка самоиндукции

inductive reactance

– реактивное сопротивление

high-frequency circuit

– высокочастотная цепь

choke coil

– дроссельная катушка

filter circuit

– цепь фильтра

electric charge

– электрический заряд

voltage

– электрическое напряжение

insulator

– изолятор, непроводник

While reading the Text of this Unit, you’ll find these words and expressions. They will be given as italicized ones. You may also consult notes and use any English-Russian dictionary.