A generating station transmits 20 MW of power through lines of total resistance 2 Ω
PHYSICS · Multi-part · CBSE · Physics · Alternating Current · Alternating Current
Problem
A generating station transmits 20 MW of power through lines of total resistance 2 Ω. Initially the transmission voltage is 66 kV; later it is increased to 220 kV while the power delivered remains the same. The station operates at an average load factor of 75 % throughout the year.
(a) Calculate the power saved in the transmission lines after the voltage increase.
(b) Determine the annual energy saved, in MWh, due to this change.