4. Suppose that a power plant uses electric power generators to produce a steady 1.5kV AC current. This power plant is generating a total of 63kW of steady electrical power. Due to the long distance from the power plant to the community that it is supplying to, the electrical transmission lines have a non-negligible total resistance of 6.49. 3) Calculate the power lost on the transmission lines if the power generators are directly connected to the transmission lines to supply electricity to the community. b) The manager of the power plant hope to reduce the power lost on the transmission lines to 0.50kW without modifying the generators. Calculate the minimal voltage needed on the transmission lines. c) To raise the voltage on the transmission lines, the manager needs to purchase transformers. A manufacturer has a transformer model on sale. This model has 400 turns on the input coil, and 2500 turns on the output coil. Ignore the power lost on the transformers, at least how many of this type of transformers are needed to raise the voltage to the desired level? (To be practical, your answer should be an integer.)