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Energy and Electronics (Atroshkina A.A.,etc.).doc
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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.

1a. The energy industry is under-

going considerable development.

2a. Development of nuclear power

plants for civil use began in the

mid-1950s.

3a. One of the main advantages of

electricity is that it hasn’t pollut-

ed the environment.

4a. Radioactive wastes damage man

and his generation.

5a. The practical use of electricity

on a larger scale was becoming

possible after developing elect-

romagnetic machines, generators

and transformers.

6a. The first central electric power

station had been installed in

1882.

7a. The energy for operating a nu-

clear power plant comes from

the heat released during the fis-

sioning of uranium or plutonium

atoms in a nuclear reactor.

8a. Nuclear reactors are increasing

thermal and radiation pollution.

9a. Copper was used as a conductor

since the beginning of the indust-

ry.

1b.The energy industry undergoes

considerable development.

2b.Development of nuclear power

plants for civil use had begun in

the mid-1950s.

3b.One of the main advantages of

electricity is that it doesn’t pol-

lute the environment.

4b.Radioactive wastes are damaging

man and his generation.

5b.The practical use of electricity

on a larger scale became possible

after developing electromagnetic

machines, generators and trans-

formers.

6b.The first central electric power

station was installed in 1882.

7b.The energy for operating a nu-

clear power plant has been com-

ing from the heat released during

the fissioning of uranium or pluto-

nium atoms in a nuclear reactor.

8b.Nuclear reactors increase thermal

and radiation pollution.

9b.Copper has been used as a con-

ductor since the beginning of the

industry.

XI. Choose the correct tense form. Translate sentences into Russian, pay attention to the meaning of the word “time”.

  1. The experiment was repeated / had been repeated many times.

  2. The power which radiates / is radiated as light is almost three times as great as that radiated as heat.

  3. It was known / is known that iron molecules are magnets at all times.

  4. Under ordinary room lightning the resistance of transistors is decreased /decreases millions of times.

  5. Ruby crystals about ten centimeters long can intensify / be intensified light ten times.

  6. The density of a semiconductor laser radiation has been / is hundreds of times as great as that of the ruby laser.

  7. The power which is transmitted / transmits along a wire is the product of the voltage times the amperage.

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