Вопрос № 223074 - Английский язык

Прочитайте текст и определите, какой из заголовков соответствует тексту
A diode is a two-element electron tube that consists of a cathode and an anode or plate acting as an electron collector. By applying a positive voltage to the plate of a diode, an electric field is established between cathode and plate that attracts electrons emitted from the cathode to the plate.

Прочитайте текст и определите, какой из заголовков соответствует тексту
Of the many types of tubes which are in use, the simplest is the diode.
This is a two-element tube which consists of an emitter of electrons (the cathode) and a collector of electrons (the plate or the anode).
The term diode refers to the number of electrodes within the tube. The main function of the two-element tube is as converter of power. By this we understand that by means of the diode the electric power can be converted. Alternating voltage is converted in the form of pulsating direct current (the convertion of a. c. power into d. с power). This is the process of rectification.

Прочитайте текст и определите, какой из заголовков соответствует тексту
A basic law of electricity states that like charges repel each other and unlike charges attract each other. Electrons emitted from the cathode of an electron tube are negative electric charges. These charges may be either attracted to or repelled from the plate of a diode tube, depending on whether the plate is positively or negatively charged.

Прочитайте текст и определите, какой из заголовков соответствует тексту
By applying a potential difference (voltage) from a battery or other source between the plate and cathode of a diode, an electric field is established within the tube. The lines of force of this field always extend from the negatively charged element to the positively charged element. Electrons, being negative electric charges, follow the direction of the lines of force in an electric field.

Прочитайте текст и определите, какой из заголовков соответствует тексту
The term space charge is applied to the cloud of electrons that is formed in the interelectrode space between cathode and plate. Since it is made up of electrons, this cloud constitutes a negative charge in the interelectrode space that has a repelling effect on the electrons being emitted from the cathode. The effect of this negative space charge alone, therefore, is to force a considerable portion of the emitted electrons back into the cathode and prevent others from reaching the plate.

Прочитайте текст и определите, какой из заголовков соответствует тексту
The control grid was added between the cathode and plate of a diode and so it provided the resulting triode tube with the ability to amplify tiny signals. The control grid in this tube is a circular spiral of a number of turns of fine wire that completely surround the cathode. Because of its open construction the grid does not directly hinder the flow of electrons to the plate, but when a voltage is placed on the grid it has a profound effect on the electric field between cathode and plate and, hence, on the total electron flow.