Распределите слова на три колонки.

Существительное глагол прилагательное

 

fixed and variable, absorption, reach, inductive, fixation, inductor, in­duct, absorb, inductance, buzzer, applicable, simultaneous, weaken, load.

 

Соотнесите русский и английский варианты

(1) (2)

simultaneous absorption постоянное напряжение

weakened oscillations одновременная абсорбция (поглощение)

fixed voltage ослабленная генерация (колебания)

 

 

The aerial is one of the essential parts of any transmission and reception system. Its purpose at the transmitter is to send electromagnetic energy into space, and at the receiver — to absorb energy from the travelling electromag­netic wave produced from the transmitter aerial.

An aerial is formed by a wire or a metal conductor. As we know, an aerial must be insulated from the ground and may occupy vertical or horizontal position.

When electric oscillations are produced in the aerial, it starts radiating radio waves which travel in different directions.

Radio waves reach the aerial of a receiver and induce in it oscillations of the same frequency as those in the aerial of the transmitter. The oscillations produced in the aerial are weak since it receives only a small part of energy radiated by the transmitter. But the oscillations are amplified in case an os­cillatory circuit is connected to the aerial circuit. Its coil and capacitor should be selected so that the circuit is tuned to the transmitter. Oscillations will be amplified in the receiving oscillator circuit because of the resonance. The receiving circuit is tuned to the frequency of the transmitter by means of a variable capacitor.

There are millions of transmitting stations in the world nowadays. They all are operating simultaneously, but the waves they radiate differ in frequen­cy. By tuning a radio set to a definite frequency one is able to receive the necessary station.