Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Дидактичнi розробки для студентiв 4 курсу РТФ.doc
Скачиваний:
3
Добавлен:
03.11.2018
Размер:
578.05 Кб
Скачать

IX. Translate the following sentences paying attention to the Predicative clauses:

1. The main property of a linear amplifier is that the gain of it is constant. 2. The problem is whether phase delay is proportional to frequency domain. 3. The main effect of amplification is that current, voltage and capacity of an electric signal are increased. 4. The task our laboratory is working at is how we can obtain linear distortion less amplification. 5. The difficulty was whether we could decrease the presence of distortions introduced by feedback in amplifiers. 6. The aim of our test is whether we can use only part of a load line to provide small non-linear distortions. 7. The problem was whether we could carry out all necessary tests in time. 8. The question which it is necessary to clarify is that all components of the output signal are delayed by the same amount. 9. The disadvantage of the given circuit was that output resistance was higher than input resistance in the ammeter. 10. The possibility of reduction of the number of stages of a pre-amplifier is that gain of amplification of each stage must be small.

X. Translate the following sentences paying attention to the Object clauses. Name the tenses:

1. We know that there exist different types of amplifiers. 2. One should remember that operating point will move because of changes in temperature or power supply levels. 3. The article reads that amplifiers can be described in the time domain. 4. The students knew that a great many amplifiers were three terminal devices. 5. The laboratory assistant said that he would demonstrate a linear amplifier. 6. The examiner asked the student if he had been present at the lecture on multistage amplifiers. 7. The lecturer stressed that an amplifier might have at least one active element in it. 8. Students asked the teacher what amplifiers were called linear. 9. The head of the laboratory reported that they were working at three terminal devices. 10. Students were told that their hometask was to learn the new words from the second part of the text "Amplifiers".

XI. Change the following sentences into Indirect speech. Mind the Sequence of Tenses:

M о d e l: He said: "I shall do this work."

He said that he would do this work.

1. The lecturer pointed out: "Amplification is the ratio of the output voltage to the input signal voltage." 2. The author of the article stated: "High frequency links will be an important port of the world communication system in future. 3. The head of the research laboratory reported: "Our laboratory is developing testing equipment for new communication systems." 4. The examiner asked the student: "What amplifier has only one active element in it?" 5. One of the students asked: "Is it possible to have the ideal gain and phase characteristics over the whole frequency range?" 6. The speaker concluded: "There exist many problems concerning space communication and one of them will be discussed at the next meeting." 7. The teacher asked: "Who knows the difference between a linear and non-linear amplifier?" 8. The laboratory assistant said: "The output signal was distorted." 9. Students were told: "This current amplifier will have a very small input impedance." 10. Students asked the teacher: "What text shall we read after we finish reading Amplifiers'?" 11. He said: "I have finished the work."