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Find the standing wave ratio, when a load impedance of 250 ohm is connected to a 75 ohm line.(a) 0.3(b) 75(c) 250(d) 3.33I have been asked this question in class test.This interesting question is from Standing Waves and SWR topic in chapter Transmission Lines of Electromagnetic Theory

Answer»

Right option is (d) 3.33

To EXPLAIN I would say: The standing wave RATIO is the ratio of the LOAD impedance to the characteristic impedance. Thus S = ZL/ZO. On substituting for ZL = 250 and Zo = 75, we GET S = 250/75 = 3.33.



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