"To be" and its functions. "To have" and its functions

Translate the following sentences paying attention to the Passive Voice:

1. 
   A remote – control system known as Central Traffic Control is now being installed on some railroads.
   
2. 
   Robot control devices are now being put into use at airports.
   
3. 
   This type of programming was being used in bridge designing, nuclear physics, and weather forecasting.
   
4. 
   Electronics is being used more and more to control industrial processes, particularly where the speed of a motor has to be accurately controlled.
   
5. 
   For many years methods of measuring critical properties in semiconductors were being developed.
   
6. 
   Modern means of radio engineering cover the greater part of the world with long, medium and ultra-short radio-waves; nevertheless, the technical means are being perfected.
   
7. 
   Space television is widely used nowadays, it is being constantly improved and extended.
   
8. 
   To keep this current from being excessive, while full speed is being obtained by the motor, resistance must be inserted in series with the direct current armature and gradually removed as the motor obtains speed.
   
9. 
   At that moment the magnetic coil in the regulator was being excited by the generator’s output voltage.
   

3. 
   Define the tense-forms of the verbs in the following sentences. Translate the sentences:
   

1. Scientists are using the energy of atom in various spheres of life.

2. The engineers were attaching the wires to the devices when I came in.
3. At present they are studying various aspects of this problem.
4. When we listen to a radio program we are using the rays that are called radio waves.
5. The scientist was solving a new problem when we visited his laboratory last week.
6. What is she doing this week?
7. John was reading a book when I came to see him.
8. My friend is writing an article for the newspaper.
9. The student was carrying out this experiment for twenty minutes.
10. I’m working too hard this year.
11. Molecules in a gas are constantly moving.
12. The electron is circling in an orbit around a nucleus.