A transmission line that has a resistance per unit length of 4.00 x 10-4 a /m is to be used to transmit 5.00 MW over 400 miles (6.44 x 105 m). The output voltage of the generator is 4.50 kV. (a) What is the line loss if a transformer is used to step up the voltage to 550 kV? kW (b) What fraction of the input power is lost to the line under these circumstances? Pļoss / P : (c) What difficulties would be encountered in attempting to transmit the 5.00 MW at the generator voltage of 4.50 kV?

A transmission line that has a resistance per unit length of 4.00 x 10-4 a /m is to be used to transmit 5.00 MW over 400 miles (6.44 x 105 m). The output voltage of the generator is 4.50 kV. (a) What is the line loss if a transformer is used to step up the voltage to 550 kV? kW (b) What fraction of the input power is lost to the line under these circumstances? Pļoss / P : (c) What difficulties would be encountered in attempting to transmit the 5.00 MW at the generator voltage of 4.50 kV?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter15: Alternating-current Circuits

Section: Chapter Questions

Problem 15.9CYU: Check Your Understanding A transformer steps the line voltage down from 110 to 9.0 V so that a...

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