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Energy and Electronics (Atroshkina A.A.,etc.).doc
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IV. Find the word with the similar meaning, according to the idea of text 3 a.

  1. observation

  2. voltaic

  3. pile

  4. to obtain

  5. to moisten

  6. to step down

  7. successive

  8. to prove

  9. purpose

  10. cycle

reservation; condition; research; agitation

magnetic; static; conductive; galvanic

radar; battery; transistor; engine

to receive ; to conduct; to carry out; to maintain

to get wet; to differ; to adjust; to detect

to indicate; to reduce; to mount; to select

enormous; dissimilar; sophisticated; following

to demonstrate; to equip; to consist; to vary

exhaust; aim; capacity; treatment

attainment; value; period; time

Post-Text Exercises

V. Connections: match a line in a with a line in b.

A

B

Franklin

voltage

non-ferrous metal

amplitude

voltaic pile

transformer

electrical effect

the number of cycles

circuit

frequency

the process of rubbing

to step down the voltage

zinc layer

alternating current

copper

unlike charges

VI. Match paragraphs with the appropriate summary.

  1. Positive aspects of electricity application;

  2. The definition of a d.c.;

  3. Historical data about electricity;

  4. Kinds of electricity and their difference;

  5. The definition of an a. c. and its usage.

VII. Answer the following questions.

  1. What types is electricity classed into?

  2. How does electricity at rest differ from electricity in motion?

  3. With what electrical effects were human-beings familiar?

  4. What did the Greeks achieve in the sphere of electricity?

  5. Is it possible to light lamps by rubbing objects?

  6. What is Franklin famous for?

  7. What are the two kinds of electrical charges?

  8. What contribution did Russian academician Petrov make?

  9. What kind of experiments did Galvani carry out?

  10. Who was the first to produce a steady, continuous current?

  11. What did Volta try to prove in his experiment in contradiction to the results of Galvani’s tests?

  12. What did Volta’s device consist of?

  13. What are the types of current flow?

  14. What is the distinction between a d. c. and an a. c.?

  15. Can you give the definition of such terms as “period”, “frequency” and “amplitude”?

  16. For what are low-frequency currents and high-frequency currents used?

  17. What are the advantages of electricity?

VIII. Translate the parts of the sentences. Complete these sentences.

  1. Electricity is classified into two types: статическое электричество and electricity in motion, that is… .

  2. b) Mankind knew three phenomena of electrical effects: (1)…; (2) трение; (3)… .

  3. Demonstrating that заряды – разноименные либо противоположные, Franklin decided to call… .

  4. 1800 is the year to be remembered: постоянный ток … .

  5. Постоянный ток differs from переменного тем, что … .

  6. Transformers are employed для понижения напряжения … .

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