PHYS 212 Class Activity: Generators and Transformers Name April Daniels 1. A pair of power transmission lines each have a 0.80 2 resistance and carry 700 A over 9.0 km. If the rms AC input voltage is 42 kV, calculate a) the voltage at the other end of the line, b) the power input, c) the power loss in the lines, and d) the power output. 2. An average of 120 kW of electric power is sent to a small town from a power plant 10 km away. The transmission lines have a total resistance of 0.40 2. Calculate the power loss if the power is transmitted at a) 120 V and b) 24,000 V. What percentage of power is lost for each case?

PHYS 212 Class Activity: Generators and Transformers Name April Daniels 1. A pair of power transmission lines each have a 0.80 2 resistance and carry 700 A over 9.0 km. If the rms AC input voltage is 42 kV, calculate a) the voltage at the other end of the line, b) the power input, c) the power loss in the lines, and d) the power output. 2. An average of 120 kW of electric power is sent to a small town from a power plant 10 km away. The transmission lines have a total resistance of 0.40 2. Calculate the power loss if the power is transmitted at a) 120 V and b) 24,000 V. What percentage of power is lost for each case?