Please provide annotated answe. Thank you! Electrical power is transmitted from

Question

Please provide annotated answe. Thank you! Electrical power is transmitted from a hydroelectric dam to a city substation at a potential of 4.40 times 105 volts. Neighborhood distribution is made at a potential of 440 volts. Three transformers in series reduce the potential from the transmission line from the dam to the potential of neighborhood distribution, each by the same proportion. If there are 1000 turns in the high-voltage side coil of each transformer, w hat is the number of turns in the low -voltage side of each transformer? If the resistive losses in a circuit Pr = I2R, explain why the high voltage is used in the transmission line:

Explanation / Answer

N1 / N2 = E1/E2

E1 = 4.4 x 105 volts

E2 = 440 volts

N1 = 1000

N2 = ?

inserting the values

1000 / N2 =4.4 x 105/440

N2 = 1

b)

Ploss = i2 R

long transmission lines have high value of resistance , so to have a low power loss , we must have small current flowing through the lines , for having a small value of current the the Voltage has to be high.

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