h) to be of great importance
Listen to paragraphs 1—4, read sentence by sentence and translate them orally in pauses.
29 5
Respond to the questions. Check your answers in the text.
1. What function do AVR serve in all modern marine alternators?
2. How does AVR operate?
3. What is the function of an operational amplifier?
4. What is to be done to obtain low rotation speeds in order to limit the load on the towline?
30 3
Fill in the blanks with suitable words. Compare your results with the text.
1. All modern ship alternators are ... with voltage regulators. 2. We shall speak about voltage regulators for ... alternators. 3. It is necessary for immediate voltage . .. after elimination of short circuit. 4. The alternator voltage is transformed before it is fed to the printed circuit board . . . terminals.
31 3
Make up sentences. Compare your results with the text.
1. alternator, voltage, transform, feed, printed circuit board, terminal.
2. voltage, rectify, feed, operational, amplifier, compare, reference.
3. difference, voltage, amplify, control, trigger, circuit, exciter current.
32 6
Complete the following sentences according to the text. Compare your results with the text.
1. The regulators permit to obtain constant voltage of generators under. .. 2. The difference between the actual voltage and reference value is. . . 3. The electronic circuits are fed from. . . 4. The triggering pulses are transferred to. . . 5. A stabilizing filter ensures... 6. The signal of the frequency measuring circuit is used to reduce the alternator voltage if. ..
33 9
Read the following sentences and point out Gerund, Participle or Infinitive in each of them. Translate them.
1. Locating the fault in the appliance was easy for the properly trained technician. 2. A varying amount of energy is required. 3. To indicate high temperatures is the function of thermocouples. 4. The problem to be discussed in tins paper is entirely new. 5. The accumulator is charged by passing a current through it. 6. He succeeded in solving the problem.