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

III. Make the sentences negative and translate them:

1. 
   That apparatus has moving parts.
   
2. 
   These instruments have large scales.
   
3. 
   The current transformer will have about 160 turns in the secondary winding.
   
4. 
   These instruments have two moving coils.
   
5. 
   That machine had some disadvantages some months ago.
   

3. Simple Tenses (Active / Passive)

1. 
   Put the sentences in the Past and Future Simple Tense:
   

1. 
   Computers perform mathematical operations at a very high speed.
   
2. 
   That unit takes the coded instructions.
   
3. 
   A reader converts information into pulse form.
   
4. 
   That electronic computer forms a large complicated device.
   
5. 
   We use these electronic computers in research and industrial work due to their exactness and speed.
   
6. 
   The engineer controls the electric current at the plant.
   
7. 
   The electrons move from one part of metal to another.
   
8. 
   The movement of electrons occurs very easily through conductors.
   
9. 
   We define this unit from the relation between the difference of potential and the current in the conductor.
   

2. 
   Make the following sentences negative and interrogative and translate them:
   

1. 
   Some transistors used point contacts.
   
2. 
   This current varies periodically.
   
3. 
   They described the procedure of data processing.
   
4. 
   The current remains at constant voltage.
   
5. 
   This will depend upon the effects of the electric current.
   
6. 
   He expressed it in cycles per second.
   
7. 
   This apparatus will supply the circuit.
   
8. 
   This transformer reduces the A. C. voltage.
   

3.