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If a correctly terminated line has a characteristic impedance of 50 ohms and a measuredvelocity of propagation of 2.2 x 108 m/s with an attenuation of 6dB/km. If a faultdevelops,

and the reflected pulses are returned non-inverted after 10us with amagnitude 0.025 of that of the transmitted pulse. Calculate the resistance and position(9 marks)of the fault With the aid of diagrams, explain what happens when the load of a terminatedtransmission line: (i) Increases in resistance. (ii) Decreases in resistance. When considering a pulse moving along a transmission line; with the aid of a diagram,explain the difference between a lumped and distributed system with reference to thetwo-way delay time 2·t and the rise time of the pulse.(6 marks) With the aid of a diagram, show how a transmission line can be represented as anelectric circuit; and list the electrical properties of the transmission line with appropriateunits of measurement.(4 marks)

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