television, video and others.
b) It is a source of electric power used in everyday life and industry.
c) Electrostatics and electromagnetism.
d) Clearness, easy regulation, no by-products, low cost, improved service.
e) Batteries, generators, electric motors and other devices.
Task 3. Complete the sentences using the suitable words given below, guess the title of the text. ( Дополните предложения, подставив слова, данные ниже, отгадайте название текста. )
is generated by converting heat, light, chemical energy, or mechanical energy to electrical energy.
Most electrical energy is produced in large by conversion of mechanical energy or heat.
- generated by the conversion of light or chemical energy is used mainly for portable power sources.
Electric power produced in large power stations generally is transmitted by using an that reverses direction 25, 50, 60 times per second.
The basic unit for measuring electric power is the - .
Watt, alternating current, electricity, electric power, power stations.
Task 4. Read the words and put down their Russian equivalents. (Переведите с английского на русский язык)
Generator
Material
Mechanical
Thermal
Motor
Relay
Contact
System
Automatic
Commutator
Stator
Rotor
Process
Rheostat
Task 5. Fill in using the verbs to detect, to appear, to disappear, to decrease. (Вставьте подходящий по смыслу глагол в нужной форме. )
When resistance increases, the risk of electric shock . . . . .
Faults in electric installations are . . . . by means of special devices.
Electric power . . . . only on live conductors with power on.
When the device is switched off electric power . . .
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