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The input impedance of a half wave transmission line with a load impedance of 12.5 ohm is

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The input impedance of a half wave transmission line with a load impedance of 12.5 ohm is

(a) 25

(b) 50

(c) 6.25

(d) 12.5

I have been asked this question in homework.

The doubt is from Transmission Line Equations topic in division Transmission Lines of Electromagnetic Theory

1 Answer

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Right answer is (d) 12.5

For explanation I would say: For a half wave transmission line L = λ/2, the input and the load impedances will be the same. Thus for the given data, the input impedance will be 12.5 ohm.

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