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What the model of transmission line that appears as a distributed low-pass filter consisting of series inductors and resistors and shunt capacitors and resistors called?

(a) Impedance model of transmission line

(b) Lumped model of distributed line

(c) Capacitative model of transmission line

(d) Complex resistive model of transmission line

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This intriguing question originated from Transmission Line Basics topic in portion Transmission Lines of Avionics

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Correct answer is (b) Lumped model of distributed line

Easiest explanation: The sum of the complex impedance by the parallel wires, resistance of the wires and the shunt capacitance results in a transmission line that appears as a distributed low-pass filter consisting of series inductors and resistors and shunt capacitors and resistors. This is called a lumped model of a distributed line.

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