GATE 2018 EC – Question 31
A lossy transmission line has resistance per unit length $R=0.05\ \Omega/\text{m}$. The line is distortionless and has characteristic impedance of $50\ \Omega$. The attenuation constant (in Np/m, correct to three decimal places) of the line is ________.
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Correct answer: -0.01 to 0.01
Explanation
For a distortionless line $\alpha=\frac{R}{Z_0}=\frac{0.05}{50}=0.001$ Np/m.