[Electric engineering.] . § 14 ELECTRIC TRANSMISSION. 49 mentioned, such systems are installed for lighting workalmost exclusively, because the single-phase alternatingcurrent is not well adapted for the operation of first a pressure of 1,100 volts at the alternator, or about1,000 at the end of the line, was commonly used. Later,pressures of 2,200 and 2,000 volts became the ordinary prac-tice. In cases where the distance was very long, step-uptransformers were used, as shown in Fig. 16. Here thecurrent from the alternator A is first sent into the primaryof the transformer T, which ra
[Electric engineering.] . § 14 ELECTRIC TRANSMISSION. 49 mentioned, such systems are installed for lighting workalmost exclusively, because the single-phase alternatingcurrent is not well adapted for the operation of first a pressure of 1,100 volts at the alternator, or about1,000 at the end of the line, was commonly used. Later,pressures of 2,200 and 2,000 volts became the ordinary prac-tice. In cases where the distance was very long, step-uptransformers were used, as shown in Fig. 16. Here thecurrent from the alternator A is first sent into the primaryof the transformer T, which raises the voltage to anyrequired amount, with, of course, a corresponding reduc-tion in current. The alternator might, for example, gener-ate a pressure of 1,000 volts and this pressure be raised to22,000 for transmission over the line. At the other end, thetransformer T steps down the high line pressure to what-ever pressure is suitable for the local distribution. Thesingle-phase alternating-current system is in many res
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