- •1. Complete the sentences with the correct form of the verbs from the box.
- •1. Our company’s mission is to __________ customized, engineered, high quality solutions and services to secure electrical power supply in critical industrial applications.
- •2. The Comprehensive Development Area __________ a total of 5670 acres of which 424 available for industrial development.
- •2. Read this text quickly and identify the paragraphs which contain information on each of the following topics. (The first one has been done for you.)
- •4. Match each of these motor components to its function.
- •Translate these sentences from English into Russian, paying attention to the use of the Absolute Participial Construction.
- •6. Read the text which follows to find the answers to these questions, then complete the table.
- •10. Watch the video again and explain how we can make an electric motor produce
- •11. Find equivalents of the following phrases in the texts “Electric Motors” and “Stepper
- •7. Make pairs of words by matching a word in a to a word in b. Then complete the
- •8. Paraphrase the sentences using the Absolute Participial Construction instead of italicized clauses.
- •12. Translate from Russian into English.
- •13. Translate the text from English into Russian.
- •14. List as many items in the home as you can which use electric motors. Choose one item and describe how it works. Use the text in exercise 13 as an example.
12. Translate from Russian into English.
1. Моторы используются для превращения электрической энергии в механическую.
2. Мотор состоит из якоря с обмоткой, коммутатора и щеток.
3. Электромагнит в моторе используется для создания магнитного поля.
4. Обмотки с параллельным возбуждением недостаточно для электрического мотора.
5. Моторы-гиганты выполняют бесчисленное количество операций при любых
условиях.
6. Моторы имеют разные формы и характеризуется широким применением.
7.Обмотка с последовательным возбуждением присоединяется к обмотке с
параллельным возбуждением.
8. Шаговые электродвигатели широко применяются в робототехнике.
9. Принтеры и самописцы требуют высокой точности позиционирования и скорости в
процессе работы.
10. Шаговые электродвигатели используются в принтерах для перемещения пишущего
элемента на заданное расстояние.
11. Шаговые электродвигатели работают, выполняя последовательность заданных
операций. Они приводятся в действие импульсами компьютера.
13. Translate the text from English into Russian.
HOW DOES AN ELECTROMAGNETIC DOORBELL WORK?
When you press the button of an electromagnetic doorbell, you complete a circuit that includes a source of electric power (typically a low voltage transformer) and a hollow coil of wire. Once the circuit is complete, current begins to flow through it and the coil of wire becomes magnetic. Extending outward from one end of the coil of wire is an iron rod. When this coil of wire - also called a solenoid - becomes magnetic, so does the iron rod. The iron rod becomes magnetic in such a way that it is attracted toward and into the solenoid, and it accelerates toward the solenoid. The attractive force diminishes once the rod is all the way inside the solenoid, but the rod then has momentum and it keeps on going out the other side of the solenoid. It travels so far out of the solenoid that it strikes a bell on the far side - the doorbell!
The rod rebounds from the bell and reverses in motion. It has traveled so far out the other side of the solenoid that it is attracted back in the opposite direction. The rod overshoots the solenoid again and, in some doorbells, strikes a second bell having a somewhat different pitch from the first bell. After this back and forth motion, the rod usually settles down in the middle of the solenoid and doesn't move again until you stop pushing the button. Once you release the button, the current in the circuit vanishes and the solenoid and the rod stop being magnetic. A weak spring then pulls the rod back to its original position at one end of the solenoid.
Speaking |
14. List as many items in the home as you can which use electric motors. Choose one item and describe how it works. Use the text in exercise 13 as an example.