Energy Resources of Today

People are energy-rich today. Solar energy is considered to be a poten­tially limitless source of clean energy. The waters of the world contain po­tential fuel - in the form of a special isotope of hydrogen - deuterium. It is sufficient to power fusion reactors for thousands of years.

1. a) Cover the right column and read the English words. Translate them into Russian and check your translation.

b) Cover the left column and translate the Russian words back into English.

2. Read the words and put down their Russian equivalents:

['komju:teit3] commutator ________________________

t'steitaj

['routaj ['kontaekt] [kan'taekt] ['prouses]

3. Put down the verbs corresponding to the given nouns and translate them:

проверять

-15-

repair slow (adj)

4. Put down the Russian equivalents of these word combinations. Trans­
late them back into English (orally).

air gap__________________________________________________

brush sparks zzziizzzzzzzzzzzzzizzzi^zmm

slow speed___________________________________

excessive speed_________________________________

safety devices __________________________________

5. Answer these questions:

1. What do motors' faults result from?

2. Are there any faults that can be ignored?

3. What makes motors' service life shorter?

4. What does voltage supply stop result in?

5. What processes show the (dis)advantages of devices?

6. Are the words: spark, short, slow, brush, fault, load, test nouns? Are
they verbs? Translate the sentences into Russian:

1. New motors are given a no-load and under a load tests.

2. When the motor is tested it should produce no abnormal noise.

3. In case this noise appears the motor must be disconnected.

4. This generator must be checked; one should give it a test.

5. The motor's brushes seem to be sparking. Can you see the sparks?

6. The windings of the coil are shorted. I have detected a short in the windings.

7. The armature rotates slowly; let's check it up!

8. The speed of rotation is too excessive; it must be slowed down.

9. In case the rotor brushes against the stator, the motor operates slowly. The faulty brushes should be replaced.

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