As You Are Reading This Question the Cells
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Translate into Russian and write down the Russian equivalents. Then interpret the Russian variants dorsum into English (orally).
B) Comprehend the left column and translate the Russian words back into
A) Cover the correct column and read the English words. Translate them into Russian and check your translation.
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3. When cells are connected in series a) all the positive terminals are
connected together.
b) all the negative terminals are connected together.
c) the positive terminal of one prison cell is continued to the negative terminal of the second.
four. Cells are connected in series in order a) to increase the current capacity.
b) to increase the voltage output.
a) cells are continued in series. b) cells are connected in parallel.
5. In guild to increase the electric current ca�pacity
6. Respond the following questions:
1. What is a prison cell used for?
2. What does a cell consist of?
3. What is the function of the terminals?
four. In what way are cells connected in order to increment the voltage output?
5. In what way are cells continued in gild to increase the current capacity?
half dozen. In what way are the terminals ofserial cells continued?
7. In what case does a cell stop operating?
8. What should be done in case it stops operating?
7. Solve these problems:
1. Suppose that you lot take four electric cells. The current chapters of each cell equals i.5 amp, the voltage output equals 2 V.
a) Connect the cells in series. In what way should it be washed?
b) Connect the bombardment to a circuit whose resistance value fifteen ohms. What is the value of current in the circuit?
2. Suppose that yous have three cells of the same value.
a) Connect them in parallel. In what way should it be done?
b) Connect the 2nd bombardment to the aforementioned circuit: what will it effect in?j
Suppose that one of the cells stops operating. What should be done in this case?
| capacitor | [ka'paesita] | ����������� |
| insulator | ['insjuleita] | �������� |
| frequency | ['fri:kwansi] | ������� |
| distance | ['distans] | ���������� |
| advantage | [ad'vaxitidj] | ������������ |
| disadvantage | ���������� | |
| plate | ���� (�����) | |
| part | [pa:t] | ����� |
| to apply | [a'plai] | ���������, ��������� |
| to move | [mu:five] | �������(��) |
| to prevent | ������������� | |
| reason | ������� | |
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a.paper insulators _________________________
air insulators _________________________
electrolyte capacitors _________________________
advantages of electrolyte capacitors___________________________
disadvantages of air insulators
b. cells under exam
capacitors in common utilize nowadays _________________________
radio sets under test
PC in common use nowadays
� a radioman
radio work
radio parts
phone and radio work___________________________________
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vantage is that they change their capacity when the temperature changes. They can operate without achange simply at temperatures not lower than -40 � Common troubles in capacitors are an open and a short. A capacitor stops operating and does not store free energy in example it has a trouble. A ca�pacitor with a trouble should be substituted by afresh one. Complete these sentences using the right variant: i. A capacitor is used a) to supply voltage. b) to increment the voltage output. c) to shop energy.
three. Interpret into Russian. Mind provided that.
1. A excursion operates well provided that it does non have whatever trouble.
2. The bulb lights provided that the circuit is connected to the cell.
3. A cell supplies free energy provided that its electrodes are of unlike matj rials.
A capacitor is one of the primary elements of aexcursion. It is used � store electric energy. A capacitor stores electric energy provided that j voltage source is practical to it.
ifl
Fig. 9
The chief parts of a capacitor are metal plates and insulators. �� function of insulators is to isolate the metallic plates and in this way t<J prevent a brusque.
In the diagram ane can see 2 common types of capacitors in usJ nowadays: a fixed capacitor and a variable one. The plates of afixeJ capacitor cannot be moved; for this reason its capacity does not change The plates of a variable capacitor motility; its capacity changes. �� greater the distance between the plates, the less is the capacity of a ca[ pacitor. Variable capacitors are commonly used by radiomen; theil function is to vary the frequency in the circuit. Stock-still capacitors ar^ used in telephone and radio work.
Fixed capacitors have insulators produced of paper, ceramics an^ other materials; variable capacitors take air insulators. Newspaper capacitors are commonly used in radio and electronics; their advantage is theij high capacity: it may be higher than 1,000 picofarad.
Besides, electrolyte capacitors are highly in use. They also have avery high capacity: it varies from 0.5 to ii,000 microfarad. Their disadf
2. The main parts of a capacitor are
three.The function of insulators is
iv. The capacity of a capacitor de�pends on
5. The capacity of a stock-still capacitor
half dozen. The plates of a variable capaci�tor
7. In order to accuse a capacitor a voltage source is practical
8. The greater the distance between the plates,
a) insulators only.
b) metal plates just.
c) metal plates and insulators be�tween them.
a) to store energy.
b) to isolate the metal plates.
c) to prevent a short between the metallic plates.
a) the size of the plates.
b) the distance between the plates.
c) the cloth of the insulators.
a) is constant.
b) is varied.
a) can be moved.
b) cannot exist moved.
a) to the metal plates.
b) to the insulators.
a) the greater is the capacity of a capacitor.
b) the less is the capacity.
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