Минобрнауки России
Федеральное государственное образовательное учреждение высшего профессионального образования
Санкт-Петербургский государственный технологический институт
(технический университет)
Кафедра иностранных языков
И.В. Лобода, С.Б. Теремязева Английский язык
для студентов заочной формы обучения механического факультета
Методические указания
Санкт-Петербург
2012
Стоимость выполнения контрольной работы по английскому языку уточняйте при заказе.
Выполнены следующие работы (стоимость готового уточняйте):
Вариант 3
I. Translate the following text using a dictionary.
THE HEATING EFFECT OF AN ELECTRIC CURRENT
Whenever a current is flowing through a conductor, there is always some opposition to its flow because of the fact that electrons or ions, if the conductor is electrolytic, will collide with each other as well as with the ions or molecules of the conductor. The energy which is supplied by the generator or battery in order to overcome this opposition is known to be transformed into heat within the conductor. The heat produced per second depends both upon the resistance of the conductor and upon the amount of the current flowing through it.
If some current flows through a thin wire and then the same amount of current is sent through a thicker one, a different amount of heat will be developed in both these wires. When the current is passed through the wire which is too thin to carry it freely, that is, the wire whose resistance offers greater opposition to its flow, more electric energy will be converted into heat than in the case of the thick wire carrying a small current. (1100 п. зн.)
II. Translate the following sentences:
1. On being heated magnetized steel will lose its magnetism because heating makes the molecules move around rapidly and expands the metal.
2. The voltage being increased, the field becomes strong to cause the electrons to produce additional ions by collision.
3. To measure the current strength and the voltage is not difficult.
4. The current is known to flow when the circuit is complete.
5. The farad is too large a unit to be used for practical work.
6. Landing on a planet is a problem to be solved in the nearest future.
7. The idea of using machines for purposes of teaching is of great importance.
8. His research followed by a report resulted in a new discussion.
9. This aircraft has proved to be very useful for pilots’ training.
10. The breaking of the circuit causes the magnetic field to disappear.
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