The characteristic impedance of a transmission line with impedance and admittance of 16 and 9 respectively is(a) 25(b) 1.33(c) 7(d) 0.75This question was addressed to me during an internship interview.Origin of the question is Transmission Line Primary Parameters in division Transmission Lines of Electromagnetic Theory

The characteristic impedance of a transmission line with impedance and

1.	The characteristic impedance of a transmission line with impedance and admittance of 16 and 9 respectively is(a) 25(b) 1.33(c) 7(d) 0.75This question was addressed to me during an internship interview.Origin of the question is Transmission Line Primary Parameters in division Transmission Lines of Electromagnetic Theory
Answer» RIGHT option is (b) 1.33 The explanation is: The CHARACTERISTIC IMPEDANCE is given by Zo = √(Z/Y), where Z is the impedance and Y is the admittance. On substituting for Z = 16 and Y = 9, we GET the characteristic impedance as √(16/9) = 1.33 units.

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