An ac generator provides emf to a resistive load in a remote factory over a two-cable transmission line. At the factory a step-down transformer reduces the voltage from its (rms) transmission value V_t to a much lower value that is safe and convenient for use in the factory. The transmission line resistance is 0.39 /cable, and the power of the generator is 250 kW. If V_t = 91 kV, what are (a) the voltage decrease V along the transmission line and (b) the rate P_d at which energy is dissipated in the line as thermal energy? If V_t = 10 kV, what are (c) V and (d) P_d? If V_t = 1.0 kV, what are (e) V and (f) P_d?