30. A 50-Ω transmission line is terminated by a load. Which one of the following statements is wrong?
(A)Ifthe load impedance is 0Ω and the electrical length of the transmission line is 90 degree, the input impedance is ∞.
(B) If the load impedance is 100 Ω and the electrical length of the transmission line is 90 degree, the input impedance is 20Ω.
(C) Ifthe load impedance is 200Ω and the electrical length of the transmission line is 180 degree, the input impedance is 200Ω.
(D) If the load impedance is 30 Ω and the electrical length of the transmission line is 360 degree, the input impedance is 30Ω.