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The short circuit impedance is given by 18 ohm and the characteristic impedance is 50 ohm. Find the open circuit impedance.(a) 138.8(b) 188.3(c) 388.1(d) 838.1This question was posed to me in final exam.Query is from Transmission Lines topic in section Transmission Lines of Electromagnetic Theory

Answer»

The correct OPTION is (a) 138.8

The explanation: The relation between characteristic impedance, OPEN and SHORT impedance is given by Zo^2 = ZSC Zoc. For the given values Zo = 50 and Zsc = 18, we GET Zoc = 50^2/18 = 138.8 units.



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