A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage to 400 kV. The secondary of this transformer is being replaced so that its output can be 500 kV for more efficient cross-country transmission on upgraded transmission lines. a) What is the ratio of turns in the new secondary compared with the old secondary? b) What is the ratio of new current output to old output (at 400kV) for the same power? If the upgraded transmission lines have the same resistance, what is the ratio of the new line power loss to old?
A large power plant generates electricity at 12.0 kV. Its old transformer once converted the voltage to 400 kV. The secondary of this transformer is being replaced so that its output can be 500 kV for more efficient cross-country transmission on upgraded transmission lines. a) What is the ratio of turns in the new secondary compared with the old secondary? b) What is the ratio of new current output to old output (at 400kV) for the same power? If the upgraded transmission lines have the same resistance, what is the ratio of the new line power loss to old?
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A large power plant generates electricity at 12.0 kV. Its old transformer once converted the
voltage to 400 kV. The secondary of this transformer is being replaced so that its output can be
500 kV for more efficient cross-country transmission on upgraded transmission lines.
a)
What is the ratio of turns in the new secondary compared with the old secondary?
b)
What is the ratio of new current output to old output (at 400kV) for the same power?
c)
If the upgraded transmission lines have the same resistance, what is the ratio of the new
line power loss to old?
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