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Say if the sentence is True (T) or False (F)
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a) Power supply system consists of external and tractionunits. (___)
b) High currents refer to AC systems. (____)
c) DC motors have been the preferred type for railways. (___)
d) The system ofoverhead wires is rather simple. (___)
e) The tension of the wire is maintained by weights suspended at each end of its length. (___)
f) Traction return current passes from the track through wiring to the substation. (___)
Reading for details
Complete the table
| advantages | disadvantages | |
| AC current | ||
| DC current |
III
Find the English equivalents in the text
Контактный провод; контактный рельс; ходовой рельс; снабжать эл. током; постоянный ток; переменный ток; внешние части; тяговые части; в свою очередь; падение напряжения; мощность двигателя; минимальные потери; диапазон температур; выпрямитель тока; перекрывать большие расстояния; сбоку.
Read the text below. Use the words given in Capitals at the end of each line to form a word that fits in the space in the same line
| The speed and weight of modern trains and the _____ capacity of railway lines have been _____ raised due to the _____ of steam locomotives with electric and diesel- electric ones, using heavier rails, _____ track, concrete sleepers and the _____ of the CTC systems. High-speed locomotives and new coaches ___ with electric _____ systems, day light lamps and air conditioning _____ help passengers travel quickly and _____. The wide use of automatic devices increases the _____ of train _____. | CARRY GREAT PLACE JOIN INTRODUCE EQUIP HEAT INSTALL COMFORT SAFE MOVE |