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A transmission line is used to send power over a distance of 4.0 kilometer through a copper power line of 1.0Ω/km. The 240 Vrms supply has an internal resistance of 50Ω.
a) The voltage is stepped up to 66 kV by a near-ideal transformer. Determine what turns ratio is required?
b) Find the maximum power that can be supplied from the source?
c) Find how much power is lost in the transmission line?
d) Determine what would be the answer for c) if no transformer were used?
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The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 4.7 V. What is the average power delivered to the circuit?
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