65kW is to arrive at a town over two 0.100- lines. Estimate how much power is saved...
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Without the transformers we find the delivered current which is the current in the transmission lines from the delivered power and the power lost in the transmission lines 65000 W 5417 A 120 V Pout Voutline I line P 099 P out P our Poste Rue 5417 A 2 01002 58690 W line line Thus there must be 65000 W 58690 W 123690W 124kW of power generated at the start of the process line end out With the transformers to deliver the same power at 120 V the delivered current from the stepdown transformer must still be 5417 A Using the stepdown transformer efficiency we calculate the current in the transmission lines and the loss in the transmission lines Vout Icut 099V fine line I line Poste Re 5472 A 2 01002 599 W line line VI 099V Our line 120V5417 A 099 1200 V 5472 A The power to be delivered is 65000 W The power that must be delivered to the stepdown 65000 W transformer is 65657 W The power that must be present at the start of the transmission 099 must be 65657 W 599 W 66256 W to compensate for the transmission line ...View the full answer
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