A voltage generator having an internal impedance Zg is connected at t = 0 to the input ter...

A voltage generator having an internal impedance Zg is connected at t = 0 to the input terminals of a lossless transmission line of length  The line has a characteristic impedance Z0 and is terminated with a load impedance ZL. At what time will a steady state on the line be reached if

(a) Zg = Z0 and ZL = Z0

(b) ZL = Z0 but Zg  ≠ Z0

(c) Zg = Z0

but ZL ≠ Z0, and (d) zg ≠ Z0 and ZL ≠ Z0?