Question
Download Solution PDFWhen L is variable, minimum attenuation is achieved at:
(Where: L is Inductance per unit length; C is Capacitance per unit length; R is Resistance per unit length; and G is Conductance per unit length.)
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
In transmission line theory, for minimum attenuation, the condition of matching the primary line constants must be satisfied.
Minimum attenuation is achieved when the characteristic impedance is purely resistive, which happens when:
\( R/L = G/C \Rightarrow L = \frac{CR}{G} \)
Where:
- L = Inductance per unit length
- C = Capacitance per unit length
- R = Resistance per unit length
- G = Conductance per unit length
Correct Answer:
\( \boxed{L = \frac{CR}{G}~\text{H/km}} \)
Last updated on Jul 1, 2025
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