Zth is XL || with 60 ohms. I'm having difficulty finding XL because the inductor is shown in Henries. Frequency is not given. Can I substitute a frequency?
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No ))) . There were two questions, multiple choice, about the circuit. One asked what the Eth was and the other asked what the Zth was. And that was it. It did imply that the circuit was to be used to plot the effect of frequency on the 50 ohm load. So I could graph it using different values of frequency. Seems a bit BS though. The writers of the lesson material ramble a lot, and it's difficult to find answers in the lesson. I can say I haven't used any of this crap since I learned it years ago. I'm a non-degreed Engineer that does System Testing. I don't design. I'm retired now and just trying to get a degree to say I did it.Can you ask your instructor what is the frequency?
How do you figure that Zth is something in parallel with 60 Ω?
In making that claim, you are claiming that the presence of that 20 Ω resistance significantly influences the circuit as seen by that load. Does that make sense to all of your years of experience as a non-degreed engineer?
You don't need a frequency to find Eth or Zth, they will simple be frequency dependent. Which makes it pretty easy to turn around and plot them as a function of frequency, doesn't it.
What was the form of the answers given in the multiple choice options? If they weren't parameterize in frequency, then the next thing to check is whether only one of the answers offered was possible at any frequency. What's the smallest that Zth can be? What's the largest? Same for Eth.
Yes all scalars and I may use jwLYou haven't said anything in post #5.
Were the multiple choice answers purely numerical? You could always show XL as XL = j ω L, and work the problem with that symbolic value. Doing that would show that you know how to work the problem.
What were the answer options for the questions?Ohms for Zth and Volts for Eth. So you are saying: Ignore the 20 Ohms
Yes all scalars and I may use jwL
experience as a non-degreed engineer is at the systems level. I don't design. I troubleshoot systems to the next replaceable unit. I don't troubleshoot to the component level.