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Problem related to Reflection on Wires in communication

Hallo All,

I need some description about the some Reflection of wires in communication. I have attached the Picture of My question Along with Answers for details so I shall be really grateful to you people if somebody spares his time to solve my problem.

My Questions:

1- Can someone explain me why we have used Wave resistance in first part but not in 2nd part?What is condition to use it.

2- Can someone explain me please how he solved Part 3 as I need concept of it and I am not being able to get the whole concept.

3- What is concept of solving this type of question.


I shall be grateful to you if someone help me out in it. Thanks a lot.

Please see pictures.
Question.

Reflection on wires
answer1
answer 2
answer 3
Jay Kosta
Jay Kosta • Jan 22, 2017
MuhammadNaumanNasir
...
1- Can someone explain me why we have used Wave resistance in first part but not in 2nd part?What is condition to use it.
...
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The 'wave' only occurs at t=0. At t>0 there is no 'wave' because the sender V=constant=5, so the 'wave resistance' also only occurs at t=0.
Use the 'wave resistance' only at TIME when a wave is present.

Jay Kosta
Endwell NY USA

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