Formulate the rules

7. Form nouns from the following verbs using the suffix -or, -еr and translate them:

For example:

amplify — усиливать; amplifier — усилитель

conduct — проводить (ток);

control — управлять;

detect — обнаруживать, определять;

divide — делить;

learn — учить;

operate — приводить в действие;

heat — нагревать;

insulate — изолировать;

emit — испускать;

direct — направлять;

use — использовать;

rectify — выпрямлять (ток).

8. Choose the appropriate English equivalents:

ближе— 1. close; 2. closer; 3.the closest

лучше— 1. good; 2. better; 3. the best

больше— 1. the most; 2. more; 3. much

самый маленький— 1.small; 2. smaller; 3. the smallest

самый большой— 1. the largest; 2. large; 3. larger

выше—1. high; 2. higher; 3. the highest

Remember the spelling: big – bigger

9. Translate the following sentences. Mind the meaning of the highlighted words.

1. The farther the grid is from the cathode, the more the plate current is. 2. The wider the distance between the grid wires, the more the plate current is. 3. The higher the temperature, the lower the conductivity of a metallic conductor. 4. The lower the temperature, the better the conductivity of a metallic conductor. 5. The slower the electrons move, the easier it is to stop them and return them to the space charge. 6. The closer the grid is to the cathode, the more control it will have on electron flow to the plate. 7. The more heavily the material is doped, the lower its electrical resistance will be. 8. The hotter the cathode becomes, the more electrons it emits per unit time (в единицу времени). 9. As the electrons move out into space, they form a cloud (облако) of negative charges. The larger this cloud becomes, the more opposition it offers to additional electrons leaving the cathode. 10. The more negative the grid, the less the plate current will be. 11. The greater the load resistance of a tube amplifier, the greater is the voltage amplification.

10. Translate

A. start from the first component

anode current, electron tube, large plate current, semicoductor device, small negative voltage, large negative voltage, gas-filled envelope

B. start from the second component

electron flow, current flow, potential increase

11. Translate the following sentences. Start your translation from an adverbial modifier of place.

1. There is one grid in a triode. 2. There are two grids in a tetrode. 3. There are three grids in a pentode. 4. There is no grid in a diode.