undue heating – надмірне нагрівання
may be due to – може бути через
measures of safety precaution – заходи з техніки безпеки
II. Read and translate the text.
As a rule electrical equipment operates reliably. Still it does not mean that it deserves no attention. It is necessary to give the equipment frequent inspection, keep it well cleaned, lubricated and repaired. Undue heating, vibration, sparking should be immediately removed.
Heating may be due to overload or to a short circuit between turns, lack of oil in bearings.
Vibration may be due to unproved foundation, unbalance in the moving parts of the machine. Conductors may get heated because of overload or by reason of damage of the insulation of the conductor.
An electrical machine of any kind requires certain conditions under which it may operate reliably: temperature and freedom of access of surrounding air, need for protection against dirt, dust, type and duration of load, etc.
Rotating machines should be placed on solid foundations.
Conductors should be protected against mechanical damage. All measures of safety precaution must be undertaken.
III. Answer the following questions.
1. How does electrical equipment operate?2. What is necessary to give the equipment?
3. What should be immediately removed?
4. What may be due to overload or to a short circuit between turns, lack of iol in bearings?
5. What does an electrical machine of any kind require?
5. Where should be placed rotating machines?
6. Must all measures of safety precaution be undertaken?
IV. Translate from English into Ukrainian.
Rotating machines, electrical equipment, frequent inspections, well cleaned, lubricated and repaired, vibration, sparking, to overload, lack of oil in bearings, unproper foundation, the insulation of the conductor, surrounding air, safety precaution.V. Complete the sentences.
1. It is necessary to give the equipment frequent inspections ………………………………... .2. Undue heating, vibration, sparking ...................................................................................... .
3. Vibration may be due to unproper ……………………………………………………….. .
4. Conductors may get heated because of…………………………………………………….. .
5. An electrical machine of any kind requires ……………………………………………….. .
6. Rotating machines should be ………………………………………………………………. .
7. Conductors should be protected ……………………………………………………………. .