1.

A transmission line has a characteristic impedance of 50Ω and a resistance of 0.1Ω/m. If the line is distortion less, the attenuation constant (in Np/m) is (a) 500 (b)5 (c) 0.014 (d)0.002

Answer»

Correct option (d)0.002

Explanation:

Attenuation constant α to be independent of frequency for distortion less transmission α = √(RG)

For distortion less transmission:

L/C = R/G

z0 = √(L/C) = √(R/G)

α = (RG) = R(√R/z0)

= R/z0

= 0.1/50

= 0.002Np/m



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